Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology 202 > Exam 2 > Flashcards

Exam 2 Flashcards

Cardiovascular, Capillary exchange

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

According to the Frank-Starling law of the heart, if end diastolic volume is decreasing, __
A) the cardiac muscle fibers are passively stretched
B) the next stroke volume will decrease
C) the end systolic volume decreases
D) b and c
E) AA

A

B) the next stroke volume will decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A man’s heart suddenly stops. If you could record his diastolic blood pressure it would be between __ mmHg
A) 120 and 80
B) 80 and 10
C) zero…he’s dead

A

B) 80 and 10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In the equation Flow=Pressure/Resistance
A) an increase in vascular resistance will decrease the flow of blood
B) an increase in the blood pressure will increase the flow of blood
C) a decrease in blood pressure will increase the flow of blood
D) a and b
E) a and c

A

D) a and b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

End diastolic volume has just increased by 20mL. Which of the following statements is true of the next cardiac cycle (heart beat).
A) the stroke volume of the next cardiac cycle will be increased
B) the cardiac output will be increased
C) the sympathetic nervous system was responsible
D) 2A
E) AA

A

D) 2A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q 
The QRS wave of the ECG corresponds to the \_\_ phase of the \_\_.
A) systolic, atria
B) diastolic, atria
C) diastolic, ventricles
D) systolic, ventricles
E) NA
A

D) systolic, ventricles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

If activity of the parasympathetic nervous system is increased, the result will be __ release that will trigger __ gate.
A) an acetylcholine, a sodium chemical
B) a norepinephrine, a sodium voltage
C) an epinephrine, a potassium chemical
D) an acetylcholine, a potassium chemical
E) NA

A

D) an acetylcholine, a potassium chemical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q 
If you become dehydrated your blood volume and blood pressure will decrease. What will your cardiovascular system do to compensate for the drop in pressure? Assume flow is constant.
A) vasodilate the arteries
B) increase the heart rate
C) vasoconstrict the arteries
D) decrease the heart rate
E) increase parasympathetic stimulation
A

C) vasoconstrict the arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q 
During ventricular systole, when pressure reaches 80mmHg or higher, which of the following valves are open?
A) the aortic valve
B) the pulmonary valve
C) the AV valves
D) a and b
E) NA
A

D) a and b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q 
The "plateau" phase of the myocyte action potential is caused by \_\_ influx.
A) fast Na+
B) slow K+
C) slow Ca++
D) fast K+
E) NA
A

C) slow Ca++

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q 
The friction blood encounters as it flows through the vessels is called \_\_
A) cardiac output
B) blood pressure
C) peripheral resistance
D) diastolic pressure
E) stroke volume
A

C) peripheral resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q 
The left AV valve is closed when
A) the left ventricle is in diastole
B) the left atrium is in systole
C) the papillary muscles are contracting
D) a and c
E) b and c
A

C) the papillary muscles are contracting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q 
At resting heart rates, the overlap of the actin and myosin filaments in cardiac myofibers are
A) shorter than optimum overlap length
B) at the optimum overlap
C) longer than optimum
D) the length is not important
E) none of the above
A

A) shorter than optimum overlap length

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

In order to vasoconstrict a muscular artery, input from the __ system must be __ to open __ gates.
A) parasympathetic nervous, increased, sodium
B) lymphatic, decreased, potassium
C) cardiovascular, increased, sodium
D) sympathetic nervous, increased, sodium
E) sensory nervous, decreased, potassium

A

D) sympathetic nervous, increased, sodium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q 
The cardiovascular system is critical for regulation of
A) vestibular function
B) internal body temperature
C) erythrocyte formation
D) hormone half-life
E) AA
A

B) internal body temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The term “isovolumetric relaxation” refers to
A) the point in time when the ventricles are in diastole and no blood is moving
B) the point in time when the atria are in systole and blood moves into the ventricles
C) the point in time when the ventricles are in systole and no blood is moving
D) the point in time when the ventricles are in systole and blood is ejected from the heart
E) NA

A

A) the point in time when the ventricles are in diastole and no blood is moving

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

If the baroreceptors increase their activity (increased frequency of action potentials) to the medulla in response to a change in blood pressure, the output response from the medulla would be to __ to return the pressure back to homeostasis. Assume a constant resistance.
A) increase sympathetic stimulation to the SA and AV nodes and heart muscle fibers
B) increase parasympathetic stimulation to the SA and AV nodes
C) decrease parasympathetic stimulation to the SA and AV nodes
D) 2A
E) NA

A

B) increase parasympathetic stimulation to the SA and AV nodes

17
Q 
At the arterial end of the capillary, the dominant force for capillary fluid exchange is
A) osmotic
B) hydrostatic
C) diffusion
D) active transport
E) passive transport
A

B) hydrostatic

18
Q 
The type of capillary found in the central nervous system would most likely be
A) fenestrated or porous
B) continuous
C) vascular
D) vasodilated
E) vasoconstricted
A

B) continuous

19
Q 
Which of the following are types of capillary transport?
A) transcytosis
B) diffusion
C) osmosis
D) 2A
E) AA
A

E) AA

20
Q

Decreased CO2 levels and a normal pH in the tissues
A)would promote local vasodilation of pre-capillary sphincters
B) indicates decreased metabolism
C) would promote decreased blood flow to the tissues
D) a and b
E) b and c

A

E) b and c

21
Q 
Blood is transported through the veins by means of
A) muscular contractions
B) increasing blood pressure
C) osmotic pressure
D) a and b
E) a and c
A

A) muscular contractions

22
Q 
This cell is the progenitor of all the formed elements.
A) tunica externa
B) ventricular myocytes
C) erythrocyte
D) hemocytoblast
E) NA
A

D) hemocytoblast

23
Q 
This cell has no organelles while in circulation
A) tunica externa
B) ventricular myocytes
C) erythrocyte
D) hemocytoblast
E) NA
A

C) erythrocyte

24
Q 
This is the thickest wall of a large artery
A) tunica externa
B) ventricular myocytes
C) erythrocyte
D) hemocytoblast
E) NA
A

E) NA

25
Q 
These are innervated by the parasympathetic nervous system
A) tunica externa
B) ventricular myocytes
C) erythrocyte
D) hemocytoblast
E) NA
A

E) NA

26
Q

A patient eats half a pound of salty peanuts without drinking any water. The result will be __ due to __.
A) a drop in blood pressure, hydrostatic forces
B) a rise in blood pressure, osmotic forces
C) an increase in tissue swelling, neural input
D) increased parasympathetic stimulation, decreased baroreceptor input
E) decreased sympathetic stimulation, vasodilation

A

B) a rise in blood pressure, osmotic forces

27
Q

Pacemaker cells
A) are found at the atrioventricular AV node
B) rhythmically depolarize (action potential) when Ca++ voltage gates open
C) are influenced by somatic nervous system input
D) b and c
E) a and b

A

B) rhythmically depolarize (action potential) when Ca++ voltage gates open

28
Q

If a cardiac cell experienced severe hyperkalemia, one result could be
A) the heart will stop
B) the heart will increase its rate
C) the heart will increase its stroke volume
D) NA
E) AA

A

A) the heart will stop

29
Q

A patient has suffered massive blood loss. Assuming flow remains constant, how will the system respond?
A) the patient will die before their body can adjust
B) the sympathetic nervous system will increase activity to the muscular arteries
C) the parasympathetic nervous system will increase activity to slow the heart rate
D) the somatic nervous system will activate skeletal muscle to increase venous return
E) b, c, and d will work to restore homeostasis

A

B) the sympathetic nervous system will increase activity to the muscular arteries

30
Q

Explain the increase in heart rate from his normal rate of 72 bpm. Assume cardiac output remains constant.
A) heat will increase body metabolism requiring more blood flow to supply these active cells
B) superficial tissues will vasodilate, reducing blood pressure, requiring more bpm
C) heat will increase parasympathetic stimulation to the heart
D) 2A
E) AA

A

B) superficial tissues will vasodilate, reducing blood pressure, requiring more bpm

Biology 202 (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions