Question 1

Severe depression can be caused by a deficit in certain brain synapses of:

acetylcholine. 

  amines. 

  amino acids. 

  neuropeptides.

Accepted Answer

amines.

Question 2

Which is true of an action potential?

 The plasma membrane is impermeable to Na+ and K+ ions

 Na+ ions move extracellularly

 The charges become equal on the outside and inside of the plasma membrane. 

The outside of the plasma membrane is nega

Accepted Answer

The outside of the plasma membrane is negatively charged, and the inside is positively charged.

Question 3

Which of the following is not used by the body as a neurotransmitter?

Nitric oxide 

  Acetylcholine 

  Carbon monoxide 

  All of the above are used by the body as neurotransmitters.

Accepted Answer

All of the above are used by the body as neurotransmitters.

Question 4

The cerebellum acts with the _____ to produce skilled movement.

  hypothalamus 

  thalamus 

  pons 

  cerebrum

Accepted Answer

cerebrum

Question 5

Which of the following is not true of the knee jerk reflex?

It is a flexor reflex. 

  It is an ipsilateral reflex. 

  It is a spinal cord reflex. 

  It does not have to involve the brain

Accepted Answer

It is a flexor reflex.

Question 6

Normal infants will show the Babinski reflex up to the age of _____ years.

  1.5-2 

  5 

  1 

  3

Accepted Answer

1.5-2

Question 7

Clearness or sharpness of visual perception is known as:

  control 

  peripheral sense 

  visual acuity 

  visual balance

Accepted Answer

visual acuity

Question 8

When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called:

  synergism. 

  permissiveness. 

  antagonism. 

  augmentation.

Accepted Answer

permissiveness.

Question 9

The vagus is said to act as a “brake” on the heart. This situation is called

  cardiac inhibition. 

  coronary inhibition. 

  vagal inhibition. 

  autonomic inhibition.

Accepted Answer

vagal inhibition.

Question 10

Which of the following vessels do not have the ability to constrict and dilate?

  capillaries 

  Arterioles 

  arteries 

  veins

Accepted Answer

capillaries

Question 11

Which of the following is a powerful poison that acts directly on any cell and quickly kills it?

  cytotoxin 

  phagotoxin 

  lymphotoxin 

  granulotoxin

Accepted Answer

lymphotoxin

Question 12

Which antibody is synthesized by immature B cells and then inserted into their plasma membranes?

  immunoglobulin M 

  immunoglobulin G 

  immunoglobulin A 

  immunoglobulin E 

  immunoglobulin D

Accepted Answer

immunoglobulin D

Question 13

One hundred milliliters of arterial blood contains approximately what volume percent of oxygen?

  10% 

  15% 

  20% 

  25%

Accepted Answer

20%

Question 14

Standard atmospheric pressure is _____ mm Hg.

  650 

  700 

  760 

  800

Accepted Answer

760

Question 15

The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg.

  23 

  160 

  300 

  590

Accepted Answer

160

Question 16

Ciliated cells lining the respiratory tract:

  help move air into and out of the lungs. 

  trap and phagocytize microorganisms. 

  help move the mucus blanket toward the pharynx. 

  do both B and C.

Accepted Answer

help move the mucus blanket toward the pharynx.

Brian Limprecht

Physiology week 7-13

Question	Answer
Severe depression can be caused by a deficit in certain brain synapses of: acetylcholine. amines. amino acids. neuropeptides.	amines.
Which is true of an action potential? The plasma membrane is impermeable to Na+ and K+ ions Na+ ions move extracellularly The charges become equal on the outside and inside of the plasma membrane. The outside of the plasma membrane is nega	The outside of the plasma membrane is negatively charged, and the inside is positively charged.
Which of the following is not used by the body as a neurotransmitter? Nitric oxide Acetylcholine Carbon monoxide All of the above are used by the body as neurotransmitters.	All of the above are used by the body as neurotransmitters.
The cerebellum acts with the _____ to produce skilled movement. hypothalamus thalamus pons cerebrum	cerebrum
Which of the following is not true of the knee jerk reflex? It is a flexor reflex. It is an ipsilateral reflex. It is a spinal cord reflex. It does not have to involve the brain	It is a flexor reflex.
Normal infants will show the Babinski reflex up to the age of _____ years. 1.5-2 5 1 3	1.5-2
Clearness or sharpness of visual perception is known as: control peripheral sense visual acuity visual balance	visual acuity
When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called: synergism. permissiveness. antagonism. augmentation.	permissiveness.
The vagus is said to act as a “brake” on the heart. This situation is called cardiac inhibition. coronary inhibition. vagal inhibition. autonomic inhibition.	vagal inhibition.
Which of the following vessels do not have the ability to constrict and dilate? capillaries Arterioles arteries veins	capillaries
Which of the following is a powerful poison that acts directly on any cell and quickly kills it? cytotoxin phagotoxin lymphotoxin granulotoxin	lymphotoxin
Which antibody is synthesized by immature B cells and then inserted into their plasma membranes? immunoglobulin M immunoglobulin G immunoglobulin A immunoglobulin E immunoglobulin D	immunoglobulin D
One hundred milliliters of arterial blood contains approximately what volume percent of oxygen? 10% 15% 20% 25%	20%
Standard atmospheric pressure is _____ mm Hg. 650 700 760 800	760
The approximate partial pressure of oxygen at standard atmospheric pressure is about _____ mm Hg. 23 160 300 590	160
Ciliated cells lining the respiratory tract: help move air into and out of the lungs. trap and phagocytize microorganisms. help move the mucus blanket toward the pharynx. do both B and C.	help move the mucus blanket toward the pharynx.

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