Exam 2 Bio 322 Flashcards
Which vessels can change their resistance the most?
a. arterioles
b. arteries
c. capillaries
d. veins
e. venules
a. arterioles
Which vessels determine the blood flow to a particular organ?
a. arteries
b. venules
c. arterioles
d. veins
e. capillaries
c. arterioles
The _______________________________, the greater the vascular tone.
a. higher the sarcoplasmic potassium
b. lower the sarcoplasmic sodium
c. lower the sarcoplasmic chloride
d. higher the sarcoplasmic chloride
e. higher the sarcoplasmic calcium
f. lower the sarcoplasmic potassium
g. lower the sarcoplasmic calcium
h. higher the sacroplasmic sodium
e. higher the sarcoplasmic calcium
Blood pressure is pulsatile in at least some (select all that apply)
a. capillaries
b. arteries
c. venules
d. arterioles
e. veins
b. arteries
d. arterioles
When compliance is higher (select all that apply)
a. diastolic pressure is lower
b. mean arterial pressure is higher
c. mean arterial pressure is lower
d. systolic pressure is higher
e. systolic pressure is lower
f. diastolic pressure is higher
e. systolic pressure is lower
f. diastolic pressure is higher
The compliance of the arteries is very volatile (changes often).
a. True
b. False
b. False
The higher the compliance of an elastic structure the
a. higher the elastic recoil of the structure
b. lower the elastic recoil of the structure
b. lower the elastic recoil of the structure
After about 50 years of age, arterial compliance tends to
a. decrease
b. increase
a. decrease
The blood flow through one arteriole is ______________ the flow through one artery.
a. faster than
b. slower than
c. the same as
b. slower than
When vascular smooth muscle contracts you get
a. vasoconstriction
b. vasodilation
a. vasoconstriction
Blood flow through all the arteries combined equals the blood flow through all the arterioles combined.
a. True
b. False
a. True
The higher the resistance downstream, the higher the pressure upstream.
a. True
b. False
a. True
Chronic aerobic exercise
a. Decreases arterial compliance
b. Increases arterial compliance
b. Increases arterial compliance
Which of the following statements is/are true? (select all that apply)
a. Compliance of an elastic structure determines the pressure in that structure
b. Pressure in an elastic structure determines the compliance of that structure
c. Volume of substance in an elastic structure determines the compliance of that structure
d. Volume of substance in an elastic structure determines the pressure in that structure
a. Compliance of an elastic structure determines the pressure in that structure
d. Volume of substance in an elastic structure determines the pressure in that structure
What term means a vessel increased in diameter?
Vasodilation
What term means a vessel decreased in diameter?
Vasoconstriction
What is the adjective form of atrium?
Atrial
What is the adjective form of artery?
Arterial
What is the deterministic equation for the flow of blood to a particular organ?
Flow to Organ=Mean arterial pressure/resistance of organ
What three factors determine the pulse pressure?
- Stroke volume
- Speed of ejection of stroke volume
- Arterial compliance
Vasodilation can be triggered by
a. decreased osmolarity
b. increased osmolarity
b. increased osmolarity
The myogenic response is part of (select all that apply)
a. active hyperemia
b. flow autoregulation
c. reactive hyperemia
d. response to injury
b. flow autoregulation
c. reactive hyperemia
In which of the following mechanisms does a decrease in oxygen trigger vasodilation? (select all that apply)
a. active hyperemia
b. flow autoregulation
c. reactive hyperemia
d. response to injury
a. active hyperemia
b. flow autoregulation
c. reactive hyperemia
What type of receptor is the α1 adrenergic receptor?
a. Gi protein-coupled receptor
b. Gq protein-coupled receptor
c. Gs protein-coupled receptor
d. Ion-channel receptor
b. Gq protein-coupled receptor