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Flashcards in Physiology 2 Deck (77)
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1

The chemosensitive area of the Medulla oblongata is most sensitive to?
A. Carbonic acid
B. H ions
C. Bicarbonate ions
D. O2

B. H ions

2

Where is the somatosensory area of the brain located?
A. Parietal lobe
B. Occipital lobe
C. Frontal lobe
D. Temporal lobe

A. Parietal lobe

3

The plateau of the cardiac action is due to?
A. Slow calcium channels
B. Slow potassium channels
C. Slow Na channels
D. Fast Na channels

A. Slow calcium channels

4

The absolute refractory period is responsible for which of the following?
A. To prevent tetany
B. To create a stronger action potential
C. Has no function
D. To prevent paralysis

A. To prevent tetany

5

Which of the following binds with the alpha receptor on vascular smooth muscle to cause vasoconstriction?
A. Norepinephrine
B. Dopamine
C. Serotonin
D. Acetylcholine

A. Norepinephrine

6

Alkaloids are detected by which takes sensations?
A. Sour
B. Bitter
C. Sweet
D. Salt

B. Bitter

7

PCO2 pressure in the arterial blood is equivalent to?
A. Atmospheric pressure
B. Alveolus pressure
C. Venous blood
D. Pulmonary artery

B. Alveolus pressure

8

Which of the following inhibitor presynaptic neurotransmitters is for primary pain fibers in the substantial gelatinosa?
A. Dopamine
B. Enkephalin
C. Serotonin
D. Oxytocin

B. Enkephalin

9

The release of a hormone from the anterior pituitary will stimulate the release of?
A. Esterol
B. Thyroxine
C. Insulin
D. Prolactin

B. Thyroxine

10

The release of which of the following hormones is necessary for ovulation to occur?
A. Estrogen
B. LH
C. Progesterone
D. Testosterone

B. LH

11

With the head in the vertical position which of the following will detect static equilibrium?
A. Utricle
B. Cochlear duct
C. Organ of corti
D. Semicircular canals

A. Utricle

12

Which of the following is the function of the oval window?
A. Transmit vibration to the macula
B. Transmit vibration to the utricle
C. Transmit vibration to the scala vestibuli
D. Transmit vibration to the cordae tympani

C. Transmit vibration to the scala vestibuli

13

During repolarization of an action potential which of the following will exit?
A. Na
B. Potassium
C. Mg
D. Chloride

B. Potassium

14

How is glucose transported within the presence of a carrier protein channels?
A. Facilitated diffusion
B. Active transport
C. Sodium co-transport
D. Osmosis

A. Facilitated diffusion

15

Which of the following enhances permeability to increase heart conduction?
A. Gap junctions
B. SA node
C. AV node
D. Purkinje fibers

A. Gap junctions

16

In the male the feedback of LH is accomplished by which of the following?
A. Oxytocin
B. Testosterone
C. FSH
D. Estrogen

B. Testosterone

17

Which neurotransmitter is released at the Postganglionic sympathetics?
A. Norepinephrine
B. Dopamine
C. Enkephalins
D. Acetylcholine

A. Norepinephrine

18

Renal ultra-filtration occurs in what location of the kidney?
A. Glomerular capillaries
B. Renal collecting ducts
C. Afferent arteriol
D. Proximal tubule

A. Glomerular capillaries

19

Loss of fluid in adults at ambient temperature of 70 degrees is by?
A. Urination
B. Respiration
C. Defecation
D. Perspiration

A. Urination

20

Which of the following increases gastric mobility?
A. Secretin
B. Cholecystokinin
C. Gastrin
D. Serotonin

C. Gastrin

21

Which of the following prevents gastric reflux?
A. Caving in of the esophagus
B. Physiological sphincter similar to the pylorus
C. Esophageal constriction
D. Stomach contraction

B. Physiological sphincter similar to the pylorus

22

Stimulation of gut smooth muscle by the sympathetic nervous system causes?
A. Hyperpolarization & decrease function
B. Increased positively of membrane potential
C. increase rate and amplitude out of peristalisis
D. decrease tonic contraction of gut sphincters

A. Hyperpolarization & decrease function

23

Which of the following is not involved in smooth muscle contraction?
A. Autonomic nervous system stimulation
B. Hormonal secretion
C. Stretch reflex
D. Voluntary motor stimulation

D. Voluntary motor stimulation

24

The body's primary response to rapid hemorrhage with blood loss is?
A. increase renin production of the JG cells
B. increase ADH
C. decrease baroreceptor,
D. increase baroreceptors

A. increase renin production of the JG cells

25

Secretin causes release of?
A. Bicarbonate
B. Gastrin
C. HCL
D. Intrinsic factor

A. Bicarbonate

26

Which of the following causes contraction of the gallbladder?
A. Cholecystokinin
B. Secretin
C. Gastrin
D. Estrogastrene

A. Cholecystokinin

27

Thermostatic variation is recognized by which area of the CNS?
A. Anterior hypothalamus
B. Medial hypothalamus
C. Lateral hypothalamus
D. Posterior hypothalamus

A. Anterior hypothalamus

28

In acidosis the kidney __ the secretion of __
A. Increases, bicarbonate
B. Increases carbon dioxide
C. Decreases bicarbonate
D. Decreases carbon dioxide

A. Increases, bicarbonate

29

In the kidney tubule what is converted to ammonia?
A. Lysine
B. Tyrosine
C. Glycine
D. Glutamine

D. Glutamine

30

Which of the following is responsible to degeneration of the endometrium?
A. Estrogen
B. Prolactin
C. Oxytocin
D. Corpus luteum involution

D. Corpus luteum involution