What is Synaptic Cleft ?

What is Synaptic Cleft ?
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The synaptic membrane of the presynaptic neuron and the stsynaptic membrane of the postsynaptic neuron combine to form synapses. There is a fluid gap between these two membranes about 20 nanometers in length. It is called synaptic cleft .
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When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of – (1) Vesicles (2) Cleft (3) Mitochondria (4) All of the above

Description : When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of – (1) Vesicles (2) Cleft (3) Mitochondria (4) All of the above

Last Answer : (1) Vesicles Explanation: The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.

Which chemical substance is secreted into the synaptic cleft?

Description : Which chemical substance is secreted into the synaptic cleft?

Last Answer : Acetyl choline

The following are true about acetylcholine: a. it is synthesized from acetyl-coenzyme A and choline b. its formation is catalysed by acetylcholinesterase c. at the synaptic cleft, it is inactivated by hydrolysis d. reuptake by the presynaptic neurones play an important in inactivating acetylcholine

Description : The following are true about acetylcholine: a. it is synthesized from acetyl-coenzyme A and choline b. its formation is catalysed by acetylcholinesterase c. at the synaptic cleft, ... inactivated by hydrolysis d. reuptake by the presynaptic neurones play an important in inactivating acetylcholine

Last Answer : at the synaptic cleft, it is inactivated by hydrolysis

At the adrenergic synapse, the concentration of adrenaline in synaptic cleft: a. increased by cocaine which inhibit reuptake of adrenaline b. decreased by MAO (monoamine oxidase) - inhibitors c. controlled chiefly by the activity of the enzyme COMT d. increased by noradrenaline receptor blockers

Description : At the adrenergic synapse, the concentration of adrenaline in synaptic cleft: a. increased by cocaine which inhibit reuptake of adrenaline b. decreased by MAO (monoamine oxidase) - inhibitors c. controlled chiefly by the activity of the enzyme COMT d. increased by noradrenaline receptor blockers

Last Answer : increased by cocaine which inhibit reuptake of adrenaline

A diagram showing axon terminal and synapse is given. Identify correctly at least two of A - D. (a) A - Neurotransmitter, B - Synaptic cleft (b) C - Neurotransmitter, D - Ca++ (c) A - Receptor, C - Synaptic vesicles (d) B - Synaptic connection, D - K+

Description : A diagram showing axon terminal and synapse is given. Identify correctly at least two of A - D. (a) A - Neurotransmitter, B - Synaptic cleft (b) C - Neurotransmitter, D - Ca++ (c) A - Receptor, C - Synaptic vesicles (d) B - Synaptic connection, D - K+

Last Answer : (c) A - Receptor, C - Synaptic vesicles

Can a Manitoba Maple be Cleft grafted and/or Side grafted?

Description : Can a Manitoba Maple be Cleft grafted and/or Side grafted?

Last Answer : Need Answer

Explain the mechanism of synaptic transmission. -Biology

Description : Explain the mechanism of synaptic transmission. -Biology

Last Answer : answer:

What is Synaptic Knob ?

Description : What is Synaptic Knob ?

Last Answer : The presynaptic membrane is actually part of the swollen edge of the axon of the presynaptic neuron. The swollen edge of the axon is called the synaptic knob .

What is Post Synaptic Neuron ?

Description : What is Post Synaptic Neuron ?

Last Answer : Parts of two neurons combine to form synapses. The neuron that participates in the formation of the axon synapse is called the presynaptic neuron. The other neurons that make up synapses are called post synaptic neurons.

Synaptic vesicles occure in

Description : Synaptic vesicles occure in

Last Answer : Synaptic vesicles occure in A. Environmental B. Adaptive C. Habitual D. Both A and B

Deep cleft which divides cerebrum longitudinaly into two halves, known as

Description : Deep cleft which divides cerebrum longitudinaly into two halves, known as

Last Answer : Deep cleft which divides cerebrum longitudinaly into two halves, known as

Deep cleft which divides cerebrum longitudinaly into two halves, known as

Description : Deep cleft which divides cerebrum longitudinaly into two halves, known as

Last Answer : Deep cleft which divides cerebrum longitudinaly into two halves, known as

What Molecules of what substances are stored in synaptic terminals?

Description : What Molecules of what substances are stored in synaptic terminals?

Last Answer : Need answer

In the context of synaptic transmission the reabsorption is called?

Description : In the context of synaptic transmission the reabsorption is called?

Last Answer : Need answer

Cleft lip and palate repair?

Description : Cleft lip and palate repair?

Last Answer : DefinitionCleft lip and cleft palate repair is surgery to fix birth defects of the upper lip and palate (roof of the mouth).Alternative NamesOrofacial cleft; Craniofacial birth defect repair; Cheiloplasty; ... will have general anesthesia (asleep and not feeling pain). The surgeon will trim the tis

Cleft lip and palate?

Description : Cleft lip and palate?

Last Answer : DefinitionCleft lip and palate are birth defects that affect the upper lip and the roof of the mouth.Alternative NamesCleft palate; Craniofacial defectCauses, incidence, and risk factorsThere are many ... may occur separately or together.Risk factors include a family history of cleft lip or pala

How long does it take to recover after a cleft pallet surgery?

Description : How long does it take to recover after a cleft pallet surgery?

Last Answer : It is best to speak with your doctor to determine the recovery time for any kind of surgery. Your recovery time could be dependant on how well the surgery goes, whether or not it was a success ... completed. Typical recovery time lasts about 4-6 weeks. This time can vary from patient to patient.

GABA(gama amino butyric acid) is (A) Post-synaptic excitatory transmitter (B) Post-synaptic inhibitor transmitter (C) activator of glia-cell function (D) inhibitor of glia-cell function

Description : GABA(gama amino butyric acid) is (A) Post-synaptic excitatory transmitter (B) Post-synaptic inhibitor transmitter (C) activator of glia-cell function (D) inhibitor of glia-cell function

Last Answer : Answer : B

Phenylephrine (a) Mimics the transmitter at post-synaptic receptors (b) Displaces transmitter from axonal terminal (c) Inhibits synthesis of transmitter (d) None of the above

Description : Phenylephrine (a) Mimics the transmitter at post-synaptic receptors (b) Displaces transmitter from axonal terminal (c) Inhibits synthesis of transmitter (d) None of the above

Last Answer : Ans: A

The synaptic pre-ganglionic neurons have their cell bodies in the lateral horn of the grey matter of the (a) Thoracic segment only (b) Lumbar segment only (c) Both (a) and (b) (d) None of the above

Description : The synaptic pre-ganglionic neurons have their cell bodies in the lateral horn of the grey matter of the (a) Thoracic segment only (b) Lumbar segment only (c) Both (a) and (b) (d) None of the above

Last Answer : Ans: C

The synaptic knobs represent the terminal endings of (a) the neuron (b) the dendron (c) the axon (d) the telodendria

Description : The synaptic knobs represent the terminal endings of (a) the neuron (b) the dendron (c) the axon (d) the telodendria

Last Answer : Ans:(d)

Name the transverse band of nervous tissues which joins the cerebral hemispheres which is separated by a median cleft:?

Description : Name the transverse band of nervous tissues which joins the cerebral hemispheres which is separated by a median cleft:?

Last Answer : Corpus collosum

Most frequent congenital anomaly is cleft palate seen in C A. Caprines B. Equines C. Bovines D. Both A&C

Description : Most frequent congenital anomaly is cleft palate seen in C A. Caprines B. Equines C. Bovines D. Both A&C

Last Answer : Bovines

The release of neurotransmitter from synaptic vesicles: a. takes place by exocytosis b. is controlled by neuronal calcium influx c. is quantal d. all above

Description : The release of neurotransmitter from synaptic vesicles: a. takes place by exocytosis b. is controlled by neuronal calcium influx c. is quantal d. all above

Last Answer : all above

The following are true about the synaptic potential: a. the Na+ and K+ currents occurs simultaneously b. is a graded potential c. the channel is ligand-gated d. the post-synaptic potential is inhibitory when depolarizing

Description : The following are true about the synaptic potential: a. the Na+ and K+ currents occurs simultaneously b. is a graded potential c. the channel is ligand-gated d. the post-synaptic potential is inhibitory when depolarizing

Last Answer : the Na+ and K+ currents occurs simultaneously

In the head and neck: a. the lymph from the upper lid drains to the parotid and submandibular lymph nodes b. the facial nerve comes from the first pharyngeal arch c. branches of the ophthalmic division of the trigeminal nerve supply the skin of the scalp as far backward as the vertex d. the veins of the scalp are connected to both the diploic veins and the intracranial venous sinuses e. an unilateral cleft lip is a failure of the maxillary process to fuse with the medial nasal process

Description : In the head and neck: a. the lymph from the upper lid drains to the parotid and submandibular lymph nodes b. the facial nerve comes from the first pharyngeal arch c. branches of the ... e. an unilateral cleft lip is a failure of the maxillary process to fuse with the medial nasal process

Last Answer : branches of the ophthalmic division of the trigeminal nerve supply the skin of the scalp as far backward as the vertex

In context of amniocentesis, which of the following statements is incorrect? (a) It can be used for detection of Down’s syndrome. (b) It can be used for detection of cleft palate. (c) It is usually done when a woman is between 14-16 weeks pregnant. (d) It is used for prenatal sex determination.

Description : In context of amniocentesis, which of the following statements is incorrect? (a) It can be used for detection of Down’s syndrome. (b) It can be used for detection of cleft palate. (c) It is usually done when a woman is between 14-16 weeks pregnant. (d) It is used for prenatal sex determination.

Last Answer : (b) It can be used for detection of cleft palate

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro- hormonal control system? (a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla. (b) Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse. (c) Hypothalamus activates the parasympathetic division of brain. (d) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex.

Description : A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro- hormonal control system? ... brain. (d) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex.

Last Answer : (a) Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla.

The figure shows an axon terminal and synapse. Select the option giving correct identification of labels A-D. A C D B (a) A-Action potential, C-Neurotransmitter (b) B-Neurotransmitter, D- Receptor capsules (c) C-Receptor, D-Synaptic vesicles (d) A-Axon terminal, B- Serotonin complex

Description : The figure shows an axon terminal and synapse. Select the option giving correct identification of labels A-D. A C D B (a) A-Action potential, C-Neurotransmitter (b) B-Neurotransmitter, D- Receptor capsules (c) C-Receptor, D-Synaptic vesicles (d) A-Axon terminal, B- Serotonin complex

Last Answer : c) C-Receptor, D-Synaptic vesicles

Receptor sites for neurotransmitters are present on (a) pre-synaptic membrane (b) tips of axons (c) post-synaptic membrane (d) membranes of synaptic vesicles.

Description : Receptor sites for neurotransmitters are present on (a) pre-synaptic membrane (b) tips of axons (c) post-synaptic membrane (d) membranes of synaptic vesicles.

Last Answer : (c) post-synaptic membrane

Which of the following is false in regard to Cleft. Palate? a. May be submucous. b. More common in males than females c. Predispose to speech defects, orthodontics problem and hearing loss. d. Patients are more likely to have cardiovascular defect than the general population.

Description : Which of the following is false in regard to Cleft. Palate? a. May be submucous. b. More common in males than females c. Predispose to speech defects, orthodontics problem and hearing loss. d. Patients are more likely to have cardiovascular defect than the general population.

Last Answer : b. More common in males than females

hildren born with cleft palate, microdontia and glossoptosis have: A. Christian disease B. Trenches-Collins Syndrome C. Pierre-Robin Syndrome

Description : hildren born with cleft palate, microdontia and glossoptosis have: A. Christian disease B. Trenches-Collins Syndrome C. Pierre-Robin Syndrome

Last Answer : C. Pierre-Robin Syndrome

Apical migration of the epithelial attachment followed by atrophy of marginal gingiva at the same level results in: A. False periodontal pocket B. Periodontal pocket recession C. Gingival cleft D. True pocket

Description : Apical migration of the epithelial attachment followed by atrophy of marginal gingiva at the same level results in: A. False periodontal pocket B. Periodontal pocket recession C. Gingival cleft D. True pocket

Last Answer : B. Periodontal pocket recession

Which of the following is false in regard to Cleft-Palate? A. May be submucous B. More common in males than females C. Predispose to speech defects, orthodontics problem and hearing loss D. Patients are more likely to have cardiovascular defect than the general

Description : Which of the following is false in regard to Cleft-Palate? A. May be submucous B. More common in males than females C. Predispose to speech defects, orthodontics problem and hearing loss D. Patients are more likely to have cardiovascular defect than the general

Last Answer : B. More common in males than females

Receptor sites for neurotransmitters are present on : (1) Pre-synaptic membrane (2) Tips of axons (3) Post-synaptic membrane (4) Membrane of synaptic vesicles

Description : Receptor sites for neurotransmitters are present on : (1) Pre-synaptic membrane (2) Tips of axons (3) Post-synaptic membrane (4) Membrane of synaptic vesicles

Last Answer : (3) Post-synaptic membrane

A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-hormonal control system ? (1) Sympathetic nervous system is activated releasing epinephrin and norepinephrin from adrenal cortex (2) Sympathetic nervous system is activated releasing epinephrin and norepinephrin from adrenal medulla (3) Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse (4) Hypothalamus activates the parasympathetic division of brain

Description : A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-hormonal control system ? (1 ... across the cleft and transmit a nerve impulse (4) Hypothalamus activates the parasympathetic division of brain

Last Answer : (2) Sympathetic nervous system is activated releasing epinephrin and norepinephrin from adrenal medulla