Quiz 7

Question 1

Schwaan cells relate mostly to what?

Answer 1

Myelin/neurologia.

Question 2

What type of neuron do sensory neurons directly link to?

Answer 2

Afferent neurons.

Question 3

What neuron will have its cell body in the spine, but extend the dendrite outside?

Answer 3

Motor neurons.

Question 4

What lies entirely in the spine?

Answer 4

Interneurons.

Question 5

What muscle or gland receives the electrical message?

Answer 5

Effector.

Question 6

What part of a neuron whose primary function is to receive signals from other neurons?

Answer 6

Dendrites.

Question 7

-70 mV relates to what of an axon?

Answer 7

Resting potential.

Question 8

-55 Refers to what of an axon?

Answer 8

Threshold.

Question 9

If an axon has completed being depolarized, what phase will it be in?

Answer 9

Action potential.

Question 10

The refractory period is related to which axons?

Answer 10

Non-myelinated.

Question 11

What gates open second during the process of conducting an impulse?

Answer 11

K+.

Question 12

During the refractory period, what gates aren’t able to open for about 2-3 milliseconds?

Answer 12

Na+.

Question 13

What ion is related to releasing neurotransmitters in an axon?

Answer 13

Ca+.

Question 14

Which signals cause polarization in an axon?

Answer 14

Inhibitory.

Question 15

What is the membrane found around the brain and spinal column?

Answer 15

Meninges.

Question 16

What enters the grey matter of spinal cord?

Answer 16

Dorsal root.

Question 17

What part of the brain maintains homeostasis?

Answer 17

Hypothalamus.

Question 18

What part of the brain has association areas and processing centres?

Answer 18

Cerebrum.

Question 19

What part of the brain regulates vital functions and has some reflex centres?

Answer 19

Medulla oblongata.

Question 20

What division of the autonomic system deals with “fight or flight” situations?

Answer 20

Sympathetic.

Question 21

What is the flap that prevents food from entering the respiratory tract?

Answer 21

Epiglottis.

Question 22

What is at the very end of the respiratory tree?

Answer 22

Alveoli.

Question 23

How many lobes does the left lung have?

Answer 23

2.

Question 24

Where is the pleura found?

Answer 24

Lungs.

Question 25

PO2 will be ____ in the alveoli as compared to the capillaries during inspiration?

Answer 25

Greater.

Question 26

What is the amount of air inhaled when at rest?

Answer 26

Tidal volume.

Question 27

What is the amount of air that is always in the lungs?

Answer 27

Reserve volume.

Question 28

During inspiration, the diaphragm and intercostal muscles do what, and there is a ____ in air pressure in lungs?

Answer 28

Contract/ negative.

Question 29

During expiration, the respiratory centre of the brain _____ to send nerve impulses.

Answer 29

Ceases.

Question 30

What is the major way that CO2 is carried in the blood?

Answer 30

Bicarbonate ions.

Question 31

After cells give up CO2 to the blood, it combines with water to first become what?

Answer 31

Bicarbonate ions.

Question 32

What viral infection leads to bacterial infection with a swelling of primary and secondary bronchi?

Answer 32

Acute bronchitis.

Question 33

What infection is where alveoli fill up with thick fluid?

Answer 33

Pneumonia.

Question 34

What genetic disorder has protein that is for Cl- is defective?

Answer 34

Cystic fibrosis.

Question 35

State the difference between grey matter and white matter.

Answer 35

Grey matter has to do with senses, emotions, and decision making. White matter transmits messages and surrounds grey matter.

Question 36

State the basic difference between central nervous system and the peripheral nervous system.

Answer 36

CNS- brain and spinal cord.

PNS- everything outside the brain and spinal cord.

Question 37

What is a synapse in relation to neurons?

Answer 37

Space between two neurons that lie next to each other.

Question 38

What is the basic difference between internal and external respiration?

Answer 38

Internal respiration: gas exchange between blood and tissue fluid.
External respiration: gas exchange between the lungs (air) and blood.

Question 39

Briefly describe the action of cilia and goblets in the trachea.

Answer 39

Cilia sweep mucus upwards towards the pharynx to be swallowed or moved into digestive tract. Goblet cells produce mucus and are found mostly in bronchi and bronchioles.