Physiology Final Exam
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Final Exam
- 1.Which of the following stimulate the anterior pituitary to release ACTH?
- A.
CHRH
- B.
GNRH
- C.
CRH
- D.
Dopamine
- 2.Which one of the following matches correctly?
- A.
GH-soft tissues >>increase in strength and length
- B.
GH-soft tissues>>hyperplasia , hypertrophy
- C.
GH-skeleton>> increase in thickness before puberty
- D.
GH-skeleton >>increase in in length after puberty
- 3.The largest pure indocrine gland:
- A.
Pancreas
- B.
Thyroid gland
- C.
Pituitary gland
- D.
Adrenal gland
- 4.Which one of the following makes up T4
- A.
Tyrosine + 3 iodine atoms
- B.
Tyrosine onlt
- C.
Tyrosine +2 iodine atoms
- D.
Tyrosine +4 iodine atoms
- 5.Which of the following is not correct?
- A.
T4 is more active than T3
- B.
Moat of the thyroid hormones are T4
- C.
T3 and T4 are generated from follicular cells
- D.
Could also be called as thyroxine
- 6.The most important member in the mineral corticoid family is :
- A.
Cortisol
- B.
adrenal androgens
- C.
Aldosterone
- D.
None of the above
- 7.Aldosteron’s target tissues are :
- A.
Proximal tubule
- B.
Loope of henle
- C.
Distal tubule
- D.
Distale and collecting tubules
- 8.Factors that increase aldosterone secretion are
- A.
Increase K+ in the blood
- B.
Renin angrotensin system (RAS)
- C.
Increase Na+ in the blood
- D.
A+B
- 9.Which of the following is an effect of Cortisol
- A.
Stimulates glucogenesis
- B.
Stimulates protein degradation
- C.
Stimulates lypolysis
- D.
All of the above
- 10.Which of the following endocrine organs located in the brain?
- A.
Hypothalamus
- B.
Gonads
- C.
Thyroid gland
- D.
Pancreas
- 11.Autorythamic cells have:
- A.
Unstable resting potential
- B.
Stable resting potentials at - 70mv
- C.
Stable resting potentials at - 90 mv
- D.
None of the above
- 12.The only way to spread the action potential from the atria to the ventricles is by:
- A.
Fibrous tissue
- B.
Gap junctions
- C.
SA node
- D.
AV node
- 13.Which of the following is not an effect of the parasympathetic simulation
- A.
Decreases rate of the depolarization threshold
- B.
Decrease heart rate
- C.
Decrease AV nodal delay
- D.
Decreases excitability
- 14.The P wave in an electrodiagram correspondes to:
- A.
Ventricular depolarization
- B.
Atrial depolarization
- C.
Atrial repolarization
- D.
Ventricular repolarization
- 15.The lub sounds of the heart is caused by:
- A.
Ventricular diastole
- B.
Closure of the AV
- C.
Ventricular systole
- D.
B+C
- 16.Which of the following is a heart rate influencing factor :
- A.
Preload
- B.
After load
- C.
Parasympathetic stim
- D.
Contactility
- 17.Which of the following matches incorrectly :
- A.
Ventricular diastole - - - >80 mmHg
- B.
Systolic blood pressure - - - >120 mmHg
- C.
Ventricular systole----> 120 mmHg
- D.
Diastolic blood pressure ---->80 mmHg
- 18.Heart rate is determined by:
- A.
The rate of repolarization in autorythamic cells
- B.
The rate of depolarization in autorythamic cells
- C.
The rate of depolarization in contractile cells
- D.
The rate of repolarization in contractile cells
- 19.Mean atrial pressure (MAP) equals to:
- A.
Diastole pressures +1/3 (Diastole - systole)
- B.
Systole pressure +1/3(diastole - systole)
- C.
Diastolic pressure +1/3(pulse pressure)
- D.
Systolic pressure +1/3(pulse pressure)
- 20.Total peripheral resistance stands for :
- A.
Venulse
- B.
Arteries
- C.
Veins
- D.
Arterioles
- 21.Which of the following is not a function of the respiratory system ?
- A.
Enhances venous system
- B.
Detoxifies fats
- C.
Enables speech, singing, and the vocalizations.
- D.
Provides a route for water loss and heat elimination.
- 22.Which of the following is the correct passage of inhaled air ?
- A.
Pharynx—larynx—trachea
- B.
Larynx — pharynx— trachea
- C.
Bronchioles—bronchi—alveoli
- D.
Bronchi—bronchioles—trachea
- 23.The functional unit of the lungs is :-
- A.
Trachea
- B.
Bronchi
- C.
Alveoli
- D.
Bronchus
- 24.The difference between the intra-alveolar pressure and the intrapleural pressure is:-
- A.
Atmospheric pressure
- B.
Transmular pressure
- C.
Intra-alveolar pressure
- D.
Positive pressure
- 25.Boyle’s law states:-
- A.
pressure and volume are directly proportional
- B.
Pressure and volume are inversely proportional
- C.
Pressure and area are directly proportional
- D.
Volume and area are inversely proportional
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