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

Grade 12 Biology > Nervous and Immune Systems Test (Ch. 9/10) > Flashcards

Flashcards in Nervous and Immune Systems Test (Ch. 9/10) Deck (33)
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1

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

T

2

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

T

3

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

F

4

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

F

5

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

T

6

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

F

7

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

T

8

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

F

9

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

T

10

Most contact infections enter through the skin.

F

11

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

b. cerebellum

12

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

e. presynaptic membrane

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

c. III, II, V, I, IV

14

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

e. accommodation

15

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

e. all of the above

16

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

c. cerebellum

17

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

b. in greater amounts inside the neuron than outside

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

a. II, III, IV, V only

19

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

d. cerebrum

20

Vision difficulties are associated with which lobe of the brain?

d. occipital

21

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

b. grey matter

22

Which part of the neuron receives sensory information?

a. dendrite

23

Interneurons are most commonly located in which of the following?

b. central nervous system

24

Which of the following is not an effector?

d. brain

25

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

a. spinal cord

26

Which of the following might weaken the immune system?

e. all of the above

27

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

a. Iysozyme

28

The AIDS virus infects which of the following cell types?

b. helper T cells

29

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

c. production of specific antibodies

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?

c. leukemia