Myelin sheath is produced by : (1) Astrocytes and Schwann cells (2) Oligodendrocytes and Osteoclasts (3) Osteoclasts and Astrocytes (4) Schwann cells and Oligodendrocytes

Myelin sheath is produced by : (1) Astrocytes and Schwann cells (2) Oligodendrocytes and Osteoclasts (3) Osteoclasts and Astrocytes (4) Schwann cells and Oligodendrocytes
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(4) Schwann cells and Oligodendrocytes
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Myelin sheath is produced by (a) astrocytes and Schwann cells (b) oligodendrocytes and osteoclasts (c) osteoclasts and astrocytes (d) Schwann cells and oligodendrocytes.

Description : Myelin sheath is produced by (a) astrocytes and Schwann cells (b) oligodendrocytes and osteoclasts (c) osteoclasts and astrocytes (d) Schwann cells and oligodendrocytes.

Last Answer : (d) Schwann cells and oligodendrocytes.

What does the Schwann cell forms a myelin around?

Description : What does the Schwann cell forms a myelin around?

Last Answer : Feel Free to Answer

Cells which envelop nerve fibres and form myelin sheath around the axon are

Description : Cells which envelop nerve fibres and form myelin sheath around the axon are

Last Answer : Cells which envelop nerve fibres and form myelin sheath around the axon are

Cells which envelop nerve fibres and form myelin sheath around the axon are

Description : Cells which envelop nerve fibres and form myelin sheath around the axon are

Last Answer : Cells which envelop nerve fibres and form myelin sheath around the axon are

The white matter present in the brain and spinal cord consists of (a) neuroglia (b) myline sheath (c) terminal arborizations of axons (d) cellular sheath of Schwann

Description : The white matter present in the brain and spinal cord consists of (a) neuroglia (b) myline sheath (c) terminal arborizations of axons (d) cellular sheath of Schwann

Last Answer : Ans:(b)

What is Myelin Sheath ?

Description : What is Myelin Sheath ?

Last Answer : : A layer of isolated fatty substance beneath the neurallama is called myelin sheath .

Myelin sheath is the covering of

Description : Myelin sheath is the covering of

Last Answer : Myelin sheath is the covering of A. Muscle cell B. Axon C. Blood vessels D. Osteocyte

Phospholipids occur in (A) Myelin sheath (B) Stabilizes chylomicrans (C) Erythrocyte membrane (D) All of these

Description : Phospholipids occur in (A) Myelin sheath (B) Stabilizes chylomicrans (C) Erythrocyte membrane (D) All of these

Last Answer : Answer : D

What is Myelin sheath?

Description : What is Myelin sheath?

Last Answer : They fatty sheath covering on the axon is called Myelin sheath.

Which of the following is regarded as a unit of nervous tissue? (a) Neurons (b) Myelin sheath (c) Axons (d) Dendrites

Description : Which of the following is regarded as a unit of nervous tissue? (a) Neurons (b) Myelin sheath (c) Axons (d) Dendrites

Last Answer : (a) Neurons

Which of the following statement is correct for node of Ranvier of nerve? (a) Neurilemma is discontinuous. (b) Myelin sheath is discontinuous. (c) Both neurilemma and myelin sheath are discontinuous. (d) Covered by myelin sheath.

Description : Which of the following statement is correct for node of Ranvier of nerve? (a) Neurilemma is discontinuous. (b) Myelin sheath is discontinuous. (c) Both neurilemma and myelin sheath are discontinuous. (d) Covered by myelin sheath.

Last Answer : (b) Myelin sheath is discontinuous.

In most axons, the myelin sheath is interrupted at intervals of about 1 millimeter or more. These interruptions are called the: a) glial b) nodes of Ranvier (pron: ron-vee-ay) c) collaterals d) nodes of Babinet

Description : In most axons, the myelin sheath is interrupted at intervals of about 1 millimeter or more. These interruptions are called the: a) glial b) nodes of Ranvier (pron: ron-vee-ay) c) collaterals d) nodes of Babinet

Last Answer : ANSWER: B -- Nodes of Ranvier

The following are true about blood-brain barrier: a. it is permeable at birth b. it involves tight junction between endothelial cells and end feet processes of astrocytes c. it is absent in the posterior pituitary d. all above

Description : The following are true about blood-brain barrier: a. it is permeable at birth b. it involves tight junction between endothelial cells and end feet processes of astrocytes c. it is absent in the posterior pituitary d. all above

Last Answer : all above

The blood-brain-barrier: a. contains the foot processes of astrocytes b. contains endothelial cells with tight junction c. allows transport in one direction only ie from the vascular system into the brain d. does not allow diffusion of water

Description : The blood-brain-barrier: a. contains the foot processes of astrocytes b. contains endothelial cells with tight junction c. allows transport in one direction only ie from the vascular system into the brain d. does not allow diffusion of water

Last Answer : does not allow diffusion of water

The blood - brain barrier: a. is permeable to bilirubin at birth b. is formed by the tight junctions between endothlial cells and the end feet processes of astrocytes c. is permeable to glucose d. all above

Description : The blood - brain barrier: a. is permeable to bilirubin at birth b. is formed by the tight junctions between endothlial cells and the end feet processes of astrocytes c. is permeable to glucose d. all above

Last Answer : all above

The blood - brain barrier: a. is permeable to bilirubin at birth b. is formed by the tight junctions between endothlial cells and the end feet processes of astrocytes c. is permeable to glucose d. all above

Description : The blood - brain barrier: a. is permeable to bilirubin at birth b. is formed by the tight junctions between endothlial cells and the end feet processes of astrocytes c. is permeable to glucose d. all above

Last Answer : all above

In biological studies which of the following is used to refer to the oxygen-binding, iron-containing, conjugated protein complex present in the sarcoplasm of muscle cells? a) myelin b) myosin c) myoglobin d) none of these

Description : In biological studies which of the following is used to refer to the oxygen-binding, iron-containing, conjugated protein complex present in the sarcoplasm of muscle cells? a) myelin b) myosin c) myoglobin d) none of these

Last Answer : ANSWER: C -- MYOGLOBIN

Formation of cartilage bones involves (a) deposition of bony matter by osteoblasts and resorption by chondroclasts (b) deposition of bony matter by osteoclasts (c) deposition of bony matter by osteoclasts only (d) deposition of bony matter by osteoblasts only.

Description : Formation of cartilage bones involves (a) deposition of bony matter by osteoblasts and resorption by chondroclasts (b) deposition of bony matter by osteoclasts (c) deposition of bony matter by osteoclasts only (d) deposition of bony matter by osteoblasts only.

Last Answer : (a) deposition of bony matter by osteoblasts and resorption by chondroclasts

Which statement is NOT correct about PTH? A) When calcium level rises, PTH secretion is inhibited. B) When calcium level lowers, PTH secretion is stimulated. C) PTH has the opposite effect of calcitonin. D) PTH stimulates calcium absorption from the gut. E) PTH decreases the activity of osteoclasts.

Description : Which statement is NOT correct about PTH? A) When calcium level rises, PTH secretion is inhibited. B) When calcium level lowers, PTH secretion is stimulated. C) PTH has the opposite effect of ... . D) PTH stimulates calcium absorption from the gut. E) PTH decreases the activity of osteoclasts.

Last Answer : E) PTH decreases the activity of osteoclasts.

$ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows the laws of inheritances.

Description : $ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows the laws of inheritances.

Last Answer : $ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows ... D. If both As and R are wrong.

Cellular totipotency was demonstrated by (a) Theodore Schwann (b) A.V. Leeuwenhoek (c) F.C. Steward (d) Robert Hooke.

Description : Cellular totipotency was demonstrated by (a) Theodore Schwann (b) A.V. Leeuwenhoek (c) F.C. Steward (d) Robert Hooke.

Last Answer : (c) F.C. Steward

Names of Schleiden and Schwann are associated with (a) protoplasm as the physical basis of life (b) cell theory (c) theory of cell lineage (d) nucleus functions as control centre of cell.

Description : Names of Schleiden and Schwann are associated with (a) protoplasm as the physical basis of life (b) cell theory (c) theory of cell lineage (d) nucleus functions as control centre of cell.

Last Answer : b) cell theory

The concept of “Omnis cellula-e-cellula” regarding cell division was first proposed by(a) Aristotle (b) Rudolf Virchow (c) Theodore Schwann (d) Schleiden.

Description : The concept of “Omnis cellula-e-cellula” regarding cell division was first proposed by (a) Aristotle (b) Rudolf Virchow (c) Theodore Schwann (d) Schleiden.

Last Answer : (b) Rudolf Virchow

Online Microbiology Test :: Microbiology Test – Random 1-The word cell was first used by A- Robert Hooke B- Theodor Schwann C- Louis Pasteur D- Ronald Ross

Description : Online Microbiology Test :: Microbiology Test – Random 1-The word cell was first used by A- Robert Hooke B- Theodor Schwann C- Louis Pasteur D- Ronald Ross

Last Answer : Robert Hooke

All of the following individuals contributed to cell theory exceptA- .Robert Hooke B- Matthias Schleiden C- .Theodor Schwann D- Rudolf Virchow

Description : All of the following individuals contributed to cell theory exceptA- .Robert Hooke B- Matthias Schleiden C- .Theodor Schwann D- Rudolf Virchow

Last Answer : .Robert Hooke

All of the following individuals contributed to cell theory except A- Robert Hooke B- Matthias Schleiden C- Theodor Schwann D- Rudolf Virchow

Description : All of the following individuals contributed to cell theory except A- Robert Hooke B- Matthias Schleiden C- Theodor Schwann D- Rudolf Virchow

Last Answer : Robert Hooke

Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal. Reason: PS II is mostly found in the appressed part of granum.

Description : Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal. Reason: PS II is mostly found in the appressed part of granum.

Last Answer : Assertion :In `C_(4)` plants, the chloroplasts of bundle sheath cells are granal. Reason: PS II ... false. D. If both Assertion and Reason are false.

In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to perform, respectively,

Description : In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to perform, respectively,

Last Answer : In `C_(4)` plants , mesophyll cells and bundle sheath cells are specialized to ... and photorespiration D. Photorespiration and dark reaction

Write the characteristics of bundle sheath cells of `C_(4)` plants

Description : Write the characteristics of bundle sheath cells of `C_(4)` plants

Last Answer : Write the characteristics of bundle sheath cells of `C_(4)` plants

When in plant leaves, chloroplast containing bundle sheath cells surrounds vascular bundles in several layers that anatomy is known as

Description : When in plant leaves, chloroplast containing bundle sheath cells surrounds vascular bundles in several layers that anatomy is known as

Last Answer : When in plant leaves, chloroplast containing bundle sheath cells surrounds vascular bundles in several layers that anatomy is known as

The CO2 fixation during C4 pathway occurs in the chloroplast of (a) guard cells (b) bundle sheath cells (c) mesophyll cells (d) spongy parenchyma.

Description : The CO2 fixation during C4 pathway occurs in the chloroplast of (a) guard cells (b) bundle sheath cells (c) mesophyll cells (d) spongy parenchyma.

Last Answer : (c) mesophyll cells

Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c) four carbon acids are the primary initial CO2 fixation products (d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant

Description : Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c ... d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant

Last Answer : (d) the primary fixation of CO2 is mediated via PEP carboxylase.

In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of (a) bundle sheath (b) phloem (c) epidermis (d) mesophyll.

Description : In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of (a) bundle sheath (b) phloem (c) epidermis (d) mesophyll.

Last Answer : (d) mesophyll.

In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in (a) bundle sheath (b) guard cells (c) epidermal cells (d) mesophyll cells

Description : In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in (a) bundle sheath (b) guard cells (c) epidermal cells (d) mesophyll cells

Last Answer : (d) mesophyll cells.

In kranz anatomy, the bundle sheath cells have (a) thin walls, many intercellular spaces and no chloroplasts (b) thick walls, no intercellular spaces and large number of chloroplasts(c) thin walls, no intercellular spaces and several chloroplasts (d) thick walls, many intercellular spaces and few chloroplasts

Description : In kranz anatomy, the bundle sheath cells have (a) thin walls, many intercellular spaces and no chloroplasts (b) thick walls, no intercellular spaces and large number of chloroplasts ... intercellular spaces and several chloroplasts (d) thick walls, many intercellular spaces and few chloroplasts

Last Answer : (b) thick walls, no intercellular spaces and large number of chloroplasts

Bundle sheath cells (a) are rich in PEP carboxylase (b) lack RuBisCO (c) lack both RuBisCO and PEP carboxylase (d) are rich in RuBisCO.

Description : Bundle sheath cells (a) are rich in PEP carboxylase (b) lack RuBisCO (c) lack both RuBisCO and PEP carboxylase (d) are rich in RuBisCO.

Last Answer : d) are rich in RuBisCO.

What is Myelin ?

Description : What is Myelin ?

Last Answer : In most cases there is a layer of fluid between the neurilema and the axon. This layer is called myelin coating .

Do myelin sheaths slow down or speed up nerve impulses?

Description : Do myelin sheaths slow down or speed up nerve impulses?

Last Answer : What is the answer ?

Myelin?

Description : Myelin?

Last Answer : DefinitionMyelin is an insulating layer that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. The purpose of the myelin sheath is ... If the myelin is damaged, the impulses slow down. This can cause diseases like multiple sclerosis.

Myelin sheaths are found: a) surrounding tendons b) covering the brain c) covering muscles d) around axons of neurons

Description : Myelin sheaths are found: a) surrounding tendons b) covering the brain c) covering muscles d) around axons of neurons

Last Answer : ANSWER: D -- AROUND AXONS OF NEURONS

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

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

In Maize grain, plumule is covered by protective sheath called

Description : In Maize grain, plumule is covered by protective sheath called

Last Answer : In Maize grain, plumule is covered by protective sheath called A. Coeorhiza B. Coleoptile C. Tegmen D. Scutellum

Gap between two adjacent myelinn sheath are known as

Description : Gap between two adjacent myelinn sheath are known as

Last Answer : Gap between two adjacent myelinn sheath are known as

Gap between two adjacent myelinn sheath are known as

Description : Gap between two adjacent myelinn sheath are known as

Last Answer : Gap between two adjacent myelinn sheath are known as

What is the Inflammation of the sheath surrounding a tendon is known as?

Description : What is the Inflammation of the sheath surrounding a tendon is known as?

Last Answer : Need answer

When a bare thermocouple is covered by a protective sheath, the response becomes (A) Faster and oscillatory (B) Faster and non-oscillatory (C) Slower and oscillatory (D) Slower and non-oscillatory

Description : When a bare thermocouple is covered by a protective sheath, the response becomes (A) Faster and oscillatory (B) Faster and non-oscillatory (C) Slower and oscillatory (D) Slower and non-oscillatory

Last Answer : (D) Slower and non-oscillatory

The axon is covered by a fatty sheath called

Description : The axon is covered by a fatty sheath called

Last Answer : Myelin Sheath.

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 into the mouth opposite the upper canine tooth d. is composed of serous acini which contribute to the saliva e. is covered by the massenter

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

______ cable consists of an inner copper core and asecond conductingouter sheath. A) Twisted-pair B) Coaxial C) Fiber-optic D) Shielded twisted-pair

Description : ______ cable consists of an inner copper core and asecond conductingouter sheath. A) Twisted-pair B) Coaxial C) Fiber-optic D) Shielded twisted-pair

Last Answer : Coaxial