The felderstrukter fibres of the extraocular musclea. form the bulk of the orbital part of the muscle
b. have poorly developed sarcoplasmic reticulum
c. are singly innervated
d. are more richly supplied by blood than the fibrillenstrukter fibres

1 Answer

Answer :

have poorly developed sarcoplasmic reticulum

Related questions

Description : The sequence of events in muscle contraction a. action potential depolarise the T-tubules b. depolarisation of T-tubules release calcium from sarcoplasmic reticulum c. calcium binds to the troponin-tropomycin complex d. all above

Last Answer : all above

Description : Dantrolene sodium reduces skeletal muscle tone by: A. Reducing acetylcholine release from motor nerve endings B. Suppressing spinal polysynaptic reflexes C. Inhibiting the generation of muscle action potential D. Reducing Ca2+ release from sarcoplasmic reticulum in the muscle fibre

Last Answer : D. Reducing Ca2+ release from sarcoplasmic reticulum in the muscle fibre

Description : The muscle spindles: a. are extrafusal fibres b. are innervated by type Ia and II fibres c. received motor innervation from the gamma fibres. d. respond to tension in the muscle

Last Answer : are innervated by type Ia and II fibres

Description : The biochemical mechanism of action of digitalis is associated with (a) A decrease in calcium uptake by the sarcoplasmic reticulum (b) An increase in ATP synthesis (c) A modification of the actin molecule (d) An increase in systolic intracellular calcium levels (e) A block of sodium/calcium exchange

Last Answer : Ans: D

Description : Extraocular muscle function testing?

Last Answer : DefinitionExtraocular muscle function testing is an examination of the function of the eye muscles. A doctor observes the movement of the eyes in six specific directions.Alternative NamesEOM; Extraocular ... is performedThis test is performed to evaluate any weakness or other problem in the e

Description : Bradycardiac can occur in response to: a. elevated intraocular pressure b. ocular massage c. pulling of the extraocular muscle d. all above

Last Answer : all above

Description : The following are true: a. depth of perception only occurs in patients with normal visual acuities in both eye b. Hering's law states that increased innervation to an extraocular muscle is ... simultaneous areas of the retina d. objects outside of the Panum's area are perceived as doubl

Last Answer : objects outside of the Panum's area are perceived as doubl

Description : The only extraocular muscle which does not arise from the apex of the orbit is: a. Superior rectus b. Superior oblique c. Inferior oblique d. Inferior rectus

Last Answer : ANSWER: C  

Description : All the following are extraocular muscle of eye except: a. Superior rectus b. Ciliary muscle c. Inferior oblique d. Superior oblique

Last Answer : ANSWER: B  

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)

Description : Which of the following organs is innervated only by parasympathetic nerves ? (a) Iris muscles (b) Ciliary muscle (c) Sweat glands (d) Splenic capsule

Last Answer : Ans: B

Description : Which of the following organs is innervated only by parasympathetic nerves: A. Iris muscles B. Ciliary musclele C. Sweat glands D. Splenic capsu

Last Answer : B. Ciliary musclele

Description : Which of the following organs is innervated only by parasympathetic nerves: A. Iris muscles B. Ciliary muscle C. Sweat glands D. Splenic capsule

Last Answer : B. Ciliary muscle

Description : This organ is a thick multi-layered structure which i richly endowed with blood vessels. It is also the largest organ of the BIOL-91; Short Answer: Name the four main excretory organs identified in man

Last Answer : ANSWER: SKIN, KIDNEYS, LUNGS, INTESTINAL TRACT

Description : All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones

Last Answer : Answer : B

Description : For an over -reinforced (singly reinforced )rectangular reinforced concrete section (a) The lever arm will be less than that for a balanced section (b) The maximum stress developed by concrete will be equal ... c) The maximum stress developed by steel will be equal to the allowable (d) All the above

Last Answer : (b) The maximum stress developed by concrete will be equal to allowable stress in concrete

Description : India is richly endowed with a variety of minerals. State two reasons in support of this statement. -Geography

Last Answer : India is richly endowed with a variety of minerals and diverse geological formations. The following two points illustrate this : (i) Development of Mining: India has huge population ... mineral resources was one of the greatest factors responsible for emergence of imperialism and colonization.

Description : The effective depth of a singly reinforced rectangular beam is 300mm. the section is over-reinforced and the neutral axis is 120mm below the top. If the maximum stress attained by concrete is 5N/mn2 and the modular ratio ... in the steel will (a) 130N/mm2 (b) 135N/mm2 (c) 160N/mm2 (d) 180N/mm2

Last Answer : (b) 135N/mm2

Description : Which of the following are not supplied by the mandibular division of trigeminal:**  A. Anterior part of digastric  B. Masseter muscle  C. Buccinator 

Last Answer : C. Buccinator 

Description : Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it? (a) Biceps of upper arm – S m o o t h m u s c l e fibres (b) Abdominal wall – Smooth muscle (c) Iris – Involuntary smooth muscle (d) Heart wall – Involuntary unstriated muscle

Last Answer : (b) Abdominal wall – Smooth muscle

Description : Blood capillaries are made of (a) endothelium, connective tissue and muscle fibres (b) endothelium and muscle fibres (c) endothelium and connective tissue (d) endothelium only.

Last Answer : d) endothelium only.

Description : The animals of cold countries have relatively shorter and poorly developed ears, eyes, hairs and other phenotypic characters. This is known by which law? (a) Cope’s Law (b) Dollo’s Law (c) Allen’s Law (d) Bergamann’s Law

Last Answer : (c) Allen’s Law

Description : Ribosomes similar to those of bacteria found in (A) Plant nuclei (B) Cardiac muscle cytoplasm (C) Liver endoplasmic reticulum (D) Neuronal cytoplasm

Last Answer : Answer : A

Description : Ribosomes similar to those of bacterial found in (A) Plant nucei (B) Cardiac muscle cytoplasm (C) Liver endoplasmic reticulum (D) Neuronal cytoplasm

Last Answer : Answer : A

Description : Insulin: a. has a half-lilfe of 60 minutes b. stimulate glycolysis in liver and muscle c. stimulate lipogenesis in liver and fat tissues d. is synthesized in the endoplasmic reticulum of the beta cells

Last Answer : is synthesized in the endoplasmic reticulum of the beta cells

Description : Stimulation of a muscle fibre by a motor neuron occurs at (a) the neuro-muscular junction (b) the transverse tubules (c) the myofibril (d) the sacroplasmic reticulum.

Last Answer : (a) the neuro-muscular junction

Description : The human lens: a. is innervated by the ophthalmic nerve b. has a uniform refractive index c. has a large radius of curvature anteriorly than posteriorly d. stops growing after birth

Last Answer : has a large radius of curvature anteriorly than posteriorly

Description : which muscle is not supplied by mandibular nerve 1) masseter 2) buccinator

Last Answer : 2) buccinator

Description : Are intestines particularily innervated? Why?

Last Answer : I don't want to scare you, but my cousin went to the ER for severe abdominal pain. They gave her pain pills and sent her home. That night she died. I think the doctors decision was based on the ... was overweight. If you are still in pain, talk to someone else. (This happened about two years ago.)

Description : Muscarinic cholinergic receptors (a) Are located only on parasympathetically innervated effector cells (b) Mediate responses by opening an instrinsic Na+ ion channel (c) Are present on vascular endothelium which has no cholinergic nerve supply (d) Predominate in the autonomic ganglia

Last Answer : Ans: C

Description : The parotid gland: a. contains a fascial sheath which is innervated by second cervical nerve b. receives post-ganglionic parasympathetic nerve from the otic ganglion c. contains a duct which opens ... . is composed of serous acini which contribute to the saliva e. is covered by the massenter

Last Answer : contains a fascial sheath which is innervated by second cervical nerve

Description : What is the Bilaminar Zone:** A. Formed of, or having, two laminae, or thin plates. Which is the distal attachment of superior hard lateral plate B. A vascular, innervated tissue that plays an important role in allowing the condyle to move foreward

Last Answer : B. A vascular, innervated tissue that plays an important role in allowing the condyle to move foreward

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

Description : Bundles of striated muscle fibres called fasciculi are surrounded by a sheath called :-

Last Answer : Bundles of striated muscle fibres called fasciculi are surrounded by a sheath called :- A. Epimysium B. Perimysium C. Exomysium D. Endomysium

Description : Muscle fibres having rounded ends are

Last Answer : Muscle fibres having rounded ends are A. Unstriped muscles B. Smoothe muscles C. Striated muscles D. All the above

Description : In human body, ligaments are made up of (1) white fibres and some yellow elastic fibres (2) white fibres only (3) yellow fibres only (4) yellow fibres and muscle fibres

Last Answer : (1) white fibres and some yellow elastic fibres Explanation: A ligament is composed of dense fibrous bundles of collagenous fibres and spindle-shaped cells known as fibrocytes, with little ground ... ligament is rich in elastic fibres, which are quite tough even though they allow elastic movement.

Description : State the function of muscle fibres.

Last Answer : Muscle fibres or myofibres are specialized cells capable of contraction and relaxation that is responsible for movement of limbs, bending of the body, movement of internal organs like heart, stomach and alimentary canal.

Description : Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Last Answer : all above

Description : Hypersecretion of growth hormone in adults does not cause further increase in height, because (a) epiphyseal plates close after adolescence (b) bones loose their sensitivity to growth hormone in adults (c) muscle fibres do not grow in size after birth (d) growth hormone becomes inactive in adults.

Last Answer : (a) epiphyseal plates close after adolescence

Description : The pacesetter in the heart is called (a) sino-atrial node (SAN) (b) atrio-ventricular node (AVN) (c) Purkinje fibres (d) papillary muscle.

Last Answer : (b) atrio-ventricular node (AVN)

Description : Bundle of His is a network of (a) muscle fibres distributed throughout the heart walls (b) muscle fibres found only in the ventricle wall (c) nerve fibres distributed in ventricles (d) nerve fibres found throughout the heart.

Last Answer : (b) muscle fibres found only in the ventricle wall

Description : Characteristics of smooth muscle fibres are (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary (b) spindle-shaped, unbranched, unstriped, multinucleate and involuntary (c ... , multinucleate and involuntary (d) cylindrical, unbranched, striated, multinucleate and voluntary.

Last Answer : (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary

Description : Which one of the following contains the largest quantity of extracellular material? (a) Striated muscle (b) Areolar tissue (c) Stratified epithelium (d) Myelinated nerve fibres

Last Answer : (b) Areolar tissue

Description : The four sketches (A, B, C and D) given below, represent four different types of animal tissues. Which one of these is correctly identified in the options given, along with its ... Smooth Heart Heart muscle contraction tissue (d) (A) Columnar Nephron Secretion epithelium and absorption

Last Answer : (a) (B) Glandular Intestine Secretion epithelium

Description : Hypersecretion of Growth Hormone in adults does not cause further increase in height, because: (1) Epiphyseal plates close after adolescence. (2) Bones loose their sensitivity to Growth Hormone in adults. ( ... fibres do not grow in size after birth. (4) Growth Hormone becomes inactive in adults.

Last Answer : (1) Epiphyseal plates close after adolescence.

Description : Adrenergic β2 agonists produce muscle tremor by: A. Facilitating neuromuscular transmission B. Incomplete fusion of contractile response of individual fibres C. Enhanced firing of muscle spindles D. Both (b) and (c) are correct

Last Answer : D. Both (b) and (c) are correct

Description : Adrenergic β2 agonists produce muscle tremor by: A. Facilitating neuromuscular transmission B. Incomplete fusion of contractile response of individual fibres C. Enhanced firing of muscle spindles D. Both (b) and (c) are correct

Last Answer : D. Both (b) and (c) are correct

Description : In human body, ligaments are made up of (1) white fibres and some yellow elastic fibres (2) white fibres only (3) yellow fibres only (4) yellow fibres and muscle fibres

Last Answer : white fibres and some yellow elastic fibres

Description : I am very important, but get treated poorly when people neglect me. I am part of a living thing. What am I? -Riddles

Last Answer : Teeth.