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NBS BOARD Gems > Physiology > Flashcards

Flashcards in Physiology Deck (25)
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1

The movement of air into the airways and lungs due to respiration results in response to

a. positive pressure gradient from the lung interior to the
atmosphere
b. Reduced intrapleural pressure
c. A negative pressure gradient from the atmosphere to
the lung interior
d. Stimulation from the apneustic center of the pons

reduced intrapleural pressue

2

Pernicious anemia may be due to damage to the
A proximal ileum
B distal jejunum
C gastric mucosa

Gastric mucosa

3

Individuals who have significant amounts of the fetal form of hemoglobin in adulthood have:

Beta thallasemia

4

Iron requires ___ to be absorbed

Vitamin C

5

During isovulumutric relaxation the:

a semilunar valve is closed
b av valves are open
c. av valves are closed

AV valves are closed

6

Thyroid gland releases

calcitonin

7

What wraps around the actin filament binding site?
a. troponin
b. tropomyosin
c. myosin
d. calcium

Myosin (head)

8

In normal breathing, which occurs on inspiration

tidal volume

9

The amount of air moving through the lungs from maximal exhalation to maximal inhalation is the:

IRV+ERV+TV

10

The amount of air moving through the lungs at rest is the: tidal volume

Tidal volume

11

A potent vasoconstrictor, angiotensin II has a significant impact on blood pressure following its formation in the

Lungs by ACE

12

Angiotensin II exerts as a powerful effect on blood pressure, causing increased pressure through ___ and retention of___

Vasoconstriction; salt, water

13

The neural communication between the cerebrum and the cerebellum goes through the:

Pons

14

Can cortisol be responsible for the synthesis of fatty acids:

Yes

15

Which of the following structures is not part of the nephron ?

collecting duct

16

Which of the flowing gastric cells secrete HCL

Parietal

17

Angiotensinogen is converted to angiotensin I by

Renin

18

The process of inspiration requires energy expenditure which is mainly due to the need to overcome:

A tissue elasticity
Surface tension in the alveoli
Tissue viscosity
Airway resistance to flow

tissue elasticity

19

What blood test finding best describes respiratory acidosis?

decreased pH

20

Which Gastric cells produce pepsinogen?

chief cells

21

Compensatory effect of respiratory acidosis is:

Increased serum bicarbonate levels
Increased rate and depth of respiration
Increased serum carbonic acid levels
Decrease in the rate and depth of respiration

Increased rate and depth of respiration

22

Surfactant, which greatly reduces the surface tension is secreted by what cells:

Alveolar Type II cells

23

The QRS complex results from:

Atrial contraction
Atrial depolarization
Ventricular repolarization

Ventricular repolarization

24

The head of the pancreas secretes

(digestive) enzymes (bcarbonate ions, pancreatic juice)

"Exocrine pancreas"

25

ADH is primarily found at:

Distal convoluted tubule
Collecting duct
Both the distal convoluted tubule and collecting duct

Collecting duct