Human Physiology-Neural Control and Coordination (NEET Biology): Questions 28 - 31 of 58

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Question number: 28

» Human Physiology » Neural Control and Coordination » Generation and Conduction of Nerve Impulse

MCQ▾

Question

Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that

Choices

Choice (4) Response
a.

Nerve fibre is insulated by a medullary sheath.

b.

Neurotransmitters are released by dendrites and not by axon endings.

c.

Sodium pump starts operating only at the cyton and then continues into the nerve fibre.

d.

Neurotransmitters are released by the axon ending and not by dendrites.

Question number: 29

» Human Physiology » Neural Control and Coordination » Neuron and Nerves

MCQ▾

Question

Each spinal nerve in a mammal arises from the spinal cord by two roots, a dorsal and a ventral. Of these the ventral root is composed of

Choices

Choice (4) Response
a.

Somatic sensory and visceral motor fibres.

b.

Somatic sensory and visceral sensory fibres.

c.

Somatic motor and visceral sensory fibres

d.

Somatic motor and visceral motor fibres.

Question number: 30

» Human Physiology » Neural Control and Coordination » Generation and Conduction of Nerve Impulse

MCQ▾

Question

When an impulse passes, the membrane is depolarized and the charge of the cells is

Choices

Choice (4) Response
a.

Inside and outside of membrane has zero potential.

b.

Outside positive and inside negative.

c.

Inside positive and outside negative.

d.

Inside and outside of membranes are electronegative.

Question number: 31

» Human Physiology » Neural Control and Coordination » Endocrine System-Hypothalamus, Pituitary, Pineal, Thyroid, Parathyroid, Adrenal, Pancreas, Gonads

MCQ▾

Question

Progesterone is

Choices

Choice (4) Response
a.

An enzyme for digesting proteins.

b.

A hormone to initiate uterine contraction during child birth

c.

An amino acid which may cause alkaptonuria

d.

A hormone concerned with retention and growth of pregnancy

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