Nervous and Immune Systems Test (Ch. 9/10)

Question 1

Information from your brain is moved to your leg muscles by motor neurons.

Answer 1

T

Question 2

Electrochemical messages are carried by the movement of ions through the nerve membrane.

Answer 2

T

Question 3

When the nerve cell is excited, it becomes more permeable to potassium ions that sodium ions.

Answer 3

F

Question 4

There are more nerve networks leading to the legs and arms than to the thumb and fingers.

Answer 4

F

Question 5

A connection between the hypothalamus and the pituitary gland unites the nervous system with the endocrine system.

Answer 5

T

Question 6

The skin is a physical and psychological barrier against invading microbes.

Answer 6

F

Question 7

If a foreign bacteria enters the skin, the first leukocyte it will meet will be a macrophage.

Answer 7

T

Question 8

During an allergic reaction, more water is absorbed into the capillaries and the tissues shrink.

Answer 8

F

Question 9

Bacteria and viruses can develop small mutations causing them to be unrecognizable by the immune system.

Answer 9

T

Question 10

Most contact infections enter through the skin.

Answer 10

F

Question 11

The coordination of motor activities in mammals is carried out by which of the following?

Answer 11

b. cerebellum

Question 12

Exocytosis is used by the synaptic vesicles to remove their contents at which of the following?

Answer 12

e. presynaptic membrane

Question 13

Given the steps shown below, which is the correct sequence for transmission at a chemical synapse?
I. neurotransmitter binds with receptor
II. calcium ions rush into neuron’s cytoplasm
III. action potential depolarizes the presynaptic membrane
IV. ion gate opens to allow particular ion to enter cell
V. synaptic vesicles release neurotransmitter into the synaptic cleft

Answer 13

c. III, II, V, I, IV

Question 14

Focusing the eye is achieved by changing the shape of the lens. This is called

Answer 14

e. accommodation

Question 15

An action potential’s rate of propagation depends on which of the following?

Answer 15

e. all of the above

Question 16

A patient with symptoms of tremors, an irregular walk, and halting speech might have experienced trauma to which of the following?

Answer 16

c. cerebellum

Question 17

When the neuron generates an action potential, the potassium ions are which of the following?

Answer 17

b. in greater amounts inside the neuron than outside

Question 18

Synapses perform the following functions:
I. speed the flow of impulses through networks of neurons
II. filter out random impulses from neural circuits
III. impose a one-way flow of information on neural networks
IV. facilitate a neural pathway
V. inhibit a neuron

Answer 18

a. II, III, IV, V only

Question 19

Fine motor movement is controlled by which part of the brain?

Answer 19

d. cerebrum

Question 20

Vision difficulties are associated with which lobe of the brain?

Answer 20

d. occipital

Question 21

Damage to which of these types of nerves is usually permanent?

Answer 21

b. grey matter

Question 22

Which part of the neuron receives sensory information?

Answer 22

a. dendrite

Question 23

Interneurons are most commonly located in which of the following?

Answer 23

b. central nervous system

Question 24

Which of the following is not an effector?

Answer 24

d. brain

Question 25

Integration of simple responses to certain stimuli, such as the knee jerk response, is accomplished by which of the following?

Answer 25

a. spinal cord

Question 26

Which of the following might weaken the immune system?

Answer 26

e. all of the above

Question 27

Which of the following enzymes found in tears is capable of destroying the cell wall material of bacteria?

Answer 27

a. Iysozyme

Question 28

The AIDS virus infects which of the following cell types?

Answer 28

b. helper T cells

Question 29

Which of these symptoms is NOT a manifestation of the inflammatory response?

Answer 29

c. production of specific antibodies

Question 30

Sex: male
Age: 34
Blood Type: O
WBC count: 25 000/mm3 (Normal = 7000/mm3)
RBC count: 2.5 million/mm3 (Normal = 5 million/mm3)
Body Temp: 38.4 degrees C
Pulse Rate: 72 beats/min

Knowing the information above about a patient, a doctor might suspect that the excess white blood cell count could possibly be an indication of which of the following?

Answer 30

c. leukemia

Question 31

T cells become mature in which of the following?

Answer 31

c. thymus gland

Question 32

Which of the following is NOT a description of allergy?

Answer 32

c. T cells are the most important contributors to the condition

Question 33

____ is the first process to occur in an inflammation.

Answer 33

b. release of histamine from mast cells