Question

JUST ANSWER ALL OF THEM.

A ganglion in the peripheral nervous system is similar to (or analogous to) a ______ in the central nervous system.

Question 41 options:

	Nucleus
	Nerve
	Tract
	Oligodendrocyte

Question 42 (2 points)

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The pressure difference that pulls air into the lungs is created by...

Question 42 options:

	Lung compliance.
	Narrowing of bronchioles.
	Contraction of the respiratory muscles.
	Lung elasticity.

Question 43 (2 points)

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The efferent part of the nervous system...

Question 43 options:

	Contains both somatic and autonomic subdivisions.
	Is a subdivision of the central nervous system.
	Contains both sensory and peripheral subdivisions.
	Contains both sensory and motor subdivisions.

Question 44 (2 points)

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The hormone that causes reabsorption of water from the collecting duct of a nephron is...

Question 44 options:

	Antidiuretic hormone (ADH).
	Aldosterone.
	Atrial Natriuretic Peptide (ANP).
	Cortisol.

Question 45 (2 points)

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Urea cannot be reabsorbed from kidney tubules.

Question 45 options:

	True
	False

Question 46 (2 points)

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According to Henry's Law, the amount of gas dissolved in a fluid (such as blood), depends on which of the following factors?

Question 46 options:

	Temperature
	The solubility of the gas
	The partial pressure of the gas
	All of the former are correct.

Question 47 (2 points)

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When a neuron's membrane potential goes up to +30 microvolts (with respect to the inside of the cell), the neuron is referred to as...

Question 47 options:

	Hyperpolarized.
	Repolarized.
	Depolarized.
	Polarized.

Question 48 (2 points)

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Fluid from the kidney tubules that is reabsorbed enters the...

Question 48 options:

	Minor calyx and then the major calyx.
	The ureter and then the urinary bladder.
	Interstitial fluid and the peritubular capillaries.
	Interstitial fluid and then the efferent arteriole.

Question 49 (2 points)

A plasma cell...

Question 49 options:

	Lives for about two weeks.
	Is a type of B lymphocyte.
	Both A and B are correct.
	None of the former is correct.

Question 50 (2 points)

In low blood oxygen (O2) conditions, local arterioles in which of the following body tissues would be expected to constrict?

Question 50 options:

	Leg muscle
	Lung
	Both lung and leg muscle.
	Neither lung nor leg muscle.

Answer 1

41) Nucleus

(Group of cell bodies of neurons outside CNS is called ganglion and within CNS is called nucleus. )

42) Contraction of the respiratory muscles

(Contraction of the respiratory muscles i.e diaphragm and external intercostal muscles expands the lung and thus increase the volume in the lung and hence the pressure in the lungs becomes less than atmospheric pressure, which pulls air into the lungs.)

43) contains both somatic and autonomic subdivisions

44) Anti diuretic hormone (ADH)

45) false

(It is false because approximately 50%of urea is reabsorbed from the proximal convoluted tubules. )

46) the partial pressure of the gas

47) depolarized

(When the membrane potential becomes positive, it is due to influx of positive ions when an action potential arrives. This is called depolarization )

48) interstitial fluid and the peritubular capillaries

49) is a type of B lymphocyte

(Plasma cells can be of both the types- short living and long living,thus we cannot say that its lifespan is of 2 weeks.)

50) lung

(When blood oxygen levels are low,the arterioles in the skeletal muscles like leg muscle undergoes vasodilation so that more blood can perfuse. Whereas the opposite happens in lung,there vasoconstriction takes place.)