why are seminiferous tubules so long -Biology

Last Answer : Connective tissue around seminiferous tubules possess endocrine cells called A. leydig cells B. Sertoli cells C. Primary germ cells D. Both A and B

The nutritive cells found in seminiferous tubules are:

Description : The nutritive cells found in seminiferous tubules are:

Last Answer : The nutritive cells found in seminiferous tubules are: A. Leydig cells B. Sertolic ells C. Atretic follicular cells D. Chromaffin cells.

Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce

Description : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce

Last Answer : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous ... . If both Assertion & Reason are False.

Outer coat of seminiferous tubules is composed of fibrous connective tissue called

Description : Outer coat of seminiferous tubules is composed of fibrous connective tissue called

Last Answer : Outer coat of seminiferous tubules is composed of fibrous connective tissue called A. Tunica ... propria C. Plica semilunaris D. Tunica albuginea

Seminiferous tubules occur in the

Description : Seminiferous tubules occur in the

Last Answer : Seminiferous tubules occur in the A. liver B. kidney C. ovary D. testis

Seminiferous tubules are composed of

Description : Seminiferous tubules are composed of

Last Answer : Seminiferous tubules are composed of A. Spermatogonia B. Glandular epithelium C. Sensory epithelium D. Germinal epithelium

Androgens are synthesised in (A) Leydig cells in testes (B) Sertoli cells in testes (C) Seminiferous tubules (D) Prostate gland

Description : Androgens are synthesised in (A) Leydig cells in testes (B) Sertoli cells in testes (C) Seminiferous tubules (D) Prostate gland

Last Answer : Answer : A

The difference between spermiogenesis and spermiation is (a) in spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed (b) in spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed (c) in spermiogenesis spermatozoa from Sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed (d) in spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules

Description : The difference between spermiogenesis and spermiation is (a) in spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed (b) in spermiogenesis spermatozoa are formed, ... in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules

Last Answer : (d) in spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

Sertoli cells are found in (a) ovaries and secrete progesterone (b) adrenal cortex and secrete adrenaline (c) seminiferous tubules and provide nutrition to germ cells (d) pancreas and secrete cholecystokinin.

Description : Sertoli cells are found in (a) ovaries and secrete progesterone (b) adrenal cortex and secrete adrenaline (c) seminiferous tubules and provide nutrition to germ cells (d) pancreas and secrete cholecystokinin.

Last Answer : (c) seminiferous tubules and provide nutrition to germ cells

Select the correct sequence for transport of sperm cells in male reproductive system. (a) Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus (b) Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra (c) Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus (d) Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra

Description : Select the correct sequence for transport of sperm cells in male reproductive system. (a) Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → ... → Urethral meatus (d) Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra

Last Answer : (c) Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus

Proximal and distal convoluted tubules are parts of (a) seminiferous tubules (b) nephron (c) oviduct (d) vas deferens

Description : Proximal and distal convoluted tubules are parts of (a) seminiferous tubules (b) nephron (c) oviduct (d) vas deferens

Last Answer : (b) nephron

Prolonged testosterone therapy can cause: A. Hypertrophy of seminiferous tubules of testes B. Hypertrophy of interstitial cells of testes C. Atrophy of interstitial cells of testes D. Both ‘A’ and ‘B’ are correct

Description : Prolonged testosterone therapy can cause: A. Hypertrophy of seminiferous tubules of testes B. Hypertrophy of interstitial cells of testes C. Atrophy of interstitial cells of testes D. Both ‘A’ and ‘B’ are correct

Last Answer : C. Atrophy of interstitial cells of testes

The difference between spermiogenesis and spermiation is (1) In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed. (2) In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed. (3) In spermiogenesis spermatozoa from Sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed. (4) In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

Description : The difference between spermiogenesis and spermiation is (1) In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed. (2) In spermiogenesis spermatozoa are formed, ... in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

Last Answer : (4) In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.

Choose the correct comb ination for labelling of part of seminiferous tubule.

Description : Choose the correct comb ination for labelling of part of seminiferous tubule.

Last Answer : Choose the correct comb ination for labelling of part of seminiferous tubule. A. a-sertoli cell,b- ... -interstitial cel, c spermatozoa. B. C. D.

Somatic chromosome number is 40. what shall be chromosome number in the cells of seminiferous tubule?

Description : Somatic chromosome number is 40. what shall be chromosome number in the cells of seminiferous tubule?

Last Answer : Somatic chromosome number is 40. what shall be chromosome number in the cells of seminiferous tubule? A. 40 B. 20 C. 10 D. 40 and 20

Select the correct statement from the ones given below with respect to Periplaneta americana. (a) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives. (b) Males bear a pair of short thread like anal styles. (c) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut. (d) Grinding of food is carried out only by the mouth parts.

Description : Select the correct statement from the ones given below with respect to Periplaneta americana. (a) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal ... midgut and hindgut. (d) Grinding of food is carried out only by the mouth parts.

Last Answer : (b) Males bear a pair of short thread like anal styles.

Select the correct statement from the ones given below with respect to Periplaneta americana (1) Grinding of food is carried out only by the mouth parts (2) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives (3) Males bear a pair of short thread like anal styles (4) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

Description : Select the correct statement from the ones given below with respect to Periplaneta americana (1) Grinding of food is carried out only by the mouth parts (2) Nervous system located dorsally, consists ... (4) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

Last Answer : (3) Males bear a pair of short thread like anal styles

The tissue present in the lining of kidney tubules and ducts of salivary glands is -Science

Description : The tissue present in the lining of kidney tubules and ducts of salivary glands is -Science

Last Answer : Cuboidal epithelium

How many parts and what are the renal tubules ?

Description : How many parts and what are the renal tubules ?

Last Answer : : Renal Tubule: The wide duct of Bowman's capsule extending from the esophagus to the collecting duct is called the renal tubule. It is divided into three parts 1. Orthopedic or proximal spiral duct 2. Henley's loop and 3. Peripheral spiral duct

How many renal tubules are there in two kidneys ?

Description : How many renal tubules are there in two kidneys ?

Last Answer : The two kidneys have a total of 20 lakh renal tubules.

Assertion `:-` Peritubular capillaries secrete substances in the convoluted tubules. Reason `:-` Harmful and useless substances which escaped ultrafil

Description : Assertion `:-` Peritubular capillaries secrete substances in the convoluted tubules. Reason `:-` Harmful and useless substances which escaped ultrafil

Last Answer : Assertion `:-` Peritubular capillaries secrete substances in the convoluted tubules. Reason `:-` Harmful ... D. If both Assertion & Reason are false.

Assertion `:-` Nearly 99 percent of the filtrate has to be reabsorbed by the renal tubules. Reason `:-` Glucose is reabsorbed by active mechanism is P

Description : Assertion `:-` Nearly 99 percent of the filtrate has to be reabsorbed by the renal tubules. Reason `:-` Glucose is reabsorbed by active mechanism is P

Last Answer : Assertion `:-` Nearly 99 percent of the filtrate has to be reabsorbed by the renal tubules. Reason ` ... . D. If both Assertion & Reason are false.

Changeable threshold material in Renal tubules

Description : Changeable threshold material in Renal tubules

Last Answer : Changeable threshold material in Renal tubules A. Water and Glucose B. Urea & Uric acid C. Glucose & Amino acids D. Water & salts

Water reabsorption in the distal parts of kidney tubules is regulated by

Description : Water reabsorption in the distal parts of kidney tubules is regulated by

Last Answer : Water reabsorption in the distal parts of kidney tubules is regulated by A. STH B. TSH C. ADH D. MSH

Malpighian tubules are analogous to

Description : Malpighian tubules are analogous to

Last Answer : Malpighian tubules are analogous to A. Trachea of cockroach B. Gills C. Flame cells D. None of these

Uriniferous tubules occur in

Description : Uriniferous tubules occur in

Last Answer : Uriniferous tubules occur in A. Stomach B. Testes C. Ovary D. Kidney

In female cockroach, how many ovarian tubules or ovarioles are present ?

Description : In female cockroach, how many ovarian tubules or ovarioles are present ?

Last Answer : In female cockroach, how many ovarian tubules or ovarioles are present ? A. 3 B. 6 C. 8 D. 16

Funtion of Malpighian tubules of cockroach :

Description : Funtion of Malpighian tubules of cockroach :

Last Answer : Funtion of Malpighian tubules of cockroach : A. Digestion B. Respiration C. Excretion D. Reproduction

Water reabsorption in the distal parts of kidney tubules is regulated by

Description : Water reabsorption in the distal parts of kidney tubules is regulated by

Last Answer : Water reabsorption in the distal parts of kidney tubules is regulated by A. STH B. TSH C. ADH D. MSH

What structure is between the proximal and distal convoluted tubules?

Description : What structure is between the proximal and distal convoluted tubules?

Last Answer : Need answer

What structure of kidney contains the collecting tubules?

Description : What structure of kidney contains the collecting tubules?

Last Answer : medulla

During compensation of respiratory alkalosis, all the following changes occur except (A) Decreased secretion of hydrogen ions by renal tubules (B) Increased excretion of sodium in urine (C) Increased excretion of bicarbonate in urine (D) Increased excretion of ammonia in urine

Description : During compensation of respiratory alkalosis, all the following changes occur except (A) Decreased secretion of hydrogen ions by renal tubules (B) Increased excretion of sodium in urine (C) Increased excretion of bicarbonate in urine (D) Increased excretion of ammonia in urine

Last Answer : Answer : D

All the following statements about renal tubular acidosis are correct except (A) Renal tubules may be unable to reabsorb bicarbonate (B) Renal tubules may be unable to secrete hydrogen ions (C) Plasma chloride is elevated (D) Anion gap is decreased

Description : All the following statements about renal tubular acidosis are correct except (A) Renal tubules may be unable to reabsorb bicarbonate (B) Renal tubules may be unable to secrete hydrogen ions (C) Plasma chloride is elevated (D) Anion gap is decreased

Last Answer : Answer : D

Furosemide inhibits reabsorption of sodium and chloride in (A) Proximal convoluted tubules (B) Loop of Henle (C) Distal convoluted tubules (D) Collecting ducts

Description : Furosemide inhibits reabsorption of sodium and chloride in (A) Proximal convoluted tubules (B) Loop of Henle (C) Distal convoluted tubules (D) Collecting ducts

Last Answer : Answer : B

Thiazide diuretics inhibit (A) Carbonic anhydrase (B) Aldosterone secretion (C) ADH secretion (D) Sodium reabsorption in distal tubules

Description : Thiazide diuretics inhibit (A) Carbonic anhydrase (B) Aldosterone secretion (C) ADH secretion (D) Sodium reabsorption in distal tubules

Last Answer : Answer : D

Antidiuretic hormone (A) Is secreted by hypothalamus (B) Secretion is increased when osmolality of plasma decreases (C) Increases obligatory reabsorption of water (D) Acts on distal convoluted tubules and collecting ducts

Description : Antidiuretic hormone (A) Is secreted by hypothalamus (B) Secretion is increased when osmolality of plasma decreases (C) Increases obligatory reabsorption of water (D) Acts on distal convoluted tubules and collecting ducts

Last Answer : Answer : D

Obligatory reabsorption of water (A) Is about 50% of the total tubular reabsorption of water (B) Is increased by antidiuretic hormone (C) Occurs in distal convoluted tubules (D) Is secondary to reabsorption of solutes

Description : Obligatory reabsorption of water (A) Is about 50% of the total tubular reabsorption of water (B) Is increased by antidiuretic hormone (C) Occurs in distal convoluted tubules (D) Is secondary to reabsorption of solutes

Last Answer : Answer : D

ADH (A) Reabsorbs water from renal tubules (B) Excretes water from renal tubules (C) Excretes hypotonic urine (D) Causes low specific gravity of urine 210 MCQs IN BIOCHEMISTRY

Description : ADH (A) Reabsorbs water from renal tubules (B) Excretes water from renal tubules (C) Excretes hypotonic urine (D) Causes low specific gravity of urine 210 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

Aldosterone increases reabsorption of sodium in (A) Proximal convoluted tubules (B) Ascending limb of loop of Henle (C) Descending limb of loop of Henle (D) Distal convoluted tubules

Description : Aldosterone increases reabsorption of sodium in (A) Proximal convoluted tubules (B) Ascending limb of loop of Henle (C) Descending limb of loop of Henle (D) Distal convoluted tubules

Last Answer : Answer : D

Para amino hippurate is (A) Filtered at glomeruli and secreted by the tubules (B) Filtered at glomeruli and not secreted by the tubules (C) Filtered at glomeruli and reabsorbed completely (D) Not removed completely during a single circulation of the blood through the kidney.

Description : Para amino hippurate is (A) Filtered at glomeruli and secreted by the tubules (B) Filtered at glomeruli and not secreted by the tubules (C) Filtered at glomeruli and reabsorbed completely (D) Not removed completely during a single circulation of the blood through the kidney.

Last Answer : Answer : A

Cystinuria results from inability to (A) Metabolise cysteine (B) Convert cystine into cysteine (C) Incorporate cysteine into proteins (D) Reabsorb cystine in renal tubules

Description : Cystinuria results from inability to (A) Metabolise cysteine (B) Convert cystine into cysteine (C) Incorporate cysteine into proteins (D) Reabsorb cystine in renal tubules

Last Answer : Answer : D

Why can cardiac muscle fibres contract for longer periods than skeletal fibres? (a) Cardiac muscle is self-excitatory (b) Extracellular calcium partially controls the strength (and length) of contraction (c) Cisternae of T-tubules are more developed in cardiac muscle (d) Cardiac muscle is uninucleate rather than multinucleate

Description : Why can cardiac muscle fibres contract for longer periods than skeletal fibres? (a) Cardiac muscle is self-excitatory (b) Extracellular calcium partially controls the strength (and length) ... tubules are more developed in cardiac muscle (d) Cardiac muscle is uninucleate rather than multinucleate

Last Answer : Ans:(a)

Antidiuretic hormone (ADH) - (1) inhibits the secretion of growth hormone by the pituitary (2) inhibits the rate of heart beat (3) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules (4) causes an increase in the blood pressure

Description : Antidiuretic hormone (ADH) - (1) inhibits the secretion of growth hormone by the pituitary (2) inhibits the rate of heart beat (3) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules (4) causes an increase in the blood pressure

Last Answer : (3) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules

Which part of the nephron in human kidney, serves the function of reabsorption of certain substances? (a) Glomerulus (b) Bowmans Capsule (c) Tubules (d) collecting duct

Description : Which part of the nephron in human kidney, serves the function of reabsorption of certain substances? (a) Glomerulus (b) Bowmans Capsule (c) Tubules (d) collecting duct

Last Answer : (c) Tubules

Antidiuretic hormone: a. decreases the osmolarity of urine b. decreases the volume of urine c. increases the reabsorption of water in the proximal tubules d. is synthesized in the posterior pituitary gland

Description : Antidiuretic hormone: a. decreases the osmolarity of urine b. decreases the volume of urine c. increases the reabsorption of water in the proximal tubules d. is synthesized in the posterior pituitary gland

Last Answer : decreases the volume of urine

The following occur in the proximal tubules of the nephron: a. reabsorption of all glucose b. reabsorption of most water c. secretion of bicarbonate d. active reabsorption of sodium

Description : The following occur in the proximal tubules of the nephron: a. reabsorption of all glucose b. reabsorption of most water c. secretion of bicarbonate d. active reabsorption of sodium

Last Answer : active reabsorption of sodium

why are seminiferous tubules so long -Biology

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