BIOL 2114L Lecture 5: Effects of Blood Vessel length on Blood Flow Rate BIOL 2114 Lab - PhysioEx Exercise 5 Activity 3

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cpflora

24 Dec 2022

School

WGTC

Department

Biology

Course

BIOL 2114L

Professor

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Activity 3: studying the e ect of blood vessel length on blood flow rate. You correctly answered: both friction and surface area. You correctly answered: directly proportional to vessel radius to the fourth power. You correctly answered: resistance to ow increases with increased vessel length. Predict question: what e ect do you think increasing the ow tube length will have on the. Your answer: the uid ow rate will decrease. You correctly answered: they are inversely proportional to each other. You correctly answered: changes in blood vessel diameter. You scored 100% by answering 4 out of 4 questions correctly. Increasing the ow tube length is analogous to increasing blood vessel length. You correctly answered: blood vessel length is directly proportional to resistance and inversely proportional to blood ow. Which of the following correctly describes the relationships between blood vessel radius, resistance, and blood ow? https://media. pearsoncmg. com/bc/bc_0media_ap/physioex/10/ex5/act3/

Related Questions

Question 6 (1 point)Save Question 6Save
When end-diastolic volume is increased, the force of the myocardialcontraction is increased. This is due to _________?

a shift in the operating point of the myocardial length-tensioncurve

an increased release of calcium

stretch-induced parasympathetic activity

a decreased afterload in the arteries
Question 7 (1 point)Save Question 7Save
Match the vessel characteristic on the left with the appropriatevessel type on the right (each vessel type will be used more thanonce, only 1 BEST answer for each characteristic).

Substance exchange with the tissues takes place in thesevessels

These vessels are the main site of vascular resistance

Active hyperemia directly affects the diameter of thesevessels

Very low resistance vessels that act as a pressure-reservoir due totheir elasticity

These vessels contain one-way valves throughout their length

The walls of these vessels are composed of a single layer ofendothelial cells and a thin basement membrane

Very low resistance vessels that serve as a volume reservoir due totheir compliance

The velocity of blood flow is the least in these vessels

These vessels carry blood back to the heart

Blood flow in these vessels is directly aided by the skeletalmuscle pump

The total cross-sectional area of this type of vessel(cross-sectional area of all these vessels combined) exceeds thetotal cross-sectional area of every other type of bloodvessel

These are the first vessels that carry blood away from theheart

1.
Arteries
2.
Arterioles
3.
Capillaries
4.
Veins
Question 8 (1 point)Save Question 8Save
Which of the following selections correctly completes thestatements: The primary mechanism via which gasses (oxygen andcarbon dioxide), ions, and nutrients are exchanged between thecapillaries and the tissue is ______.

Diffusion

Active transport

Bulk flow

More than one of the above is correct.
Question 9 (1 point)Save Question 9Save
Which of the following changes will favor an increase in absorptionat the capillaries?

An increase in plasma osmolarity.

An increase in interstitial fluid osmolarity.

An increase in capillary fluid hydrostatic pressure.

A decrease in interstitial fluid hyrdrostatic pressure.

More than one of the above selections is correct.
Question 10 (1 point)Save Question 10Save
Correct order the following events that would occur due to a dropin MAP.

Sympathetic activation increases and parasympathetic activationdecreases

Heart rate, stroke volume, cardiac output, and total peripheralresistance increase.

MAP rises.

Baroreceptor firing decreases

redhedgehog584

Is increasing blood pressure 5 - 10 times higher a viableoption? What percentage increase in blood pressure is reasonable?Explain!

Is decreasing the length of your blood vessels a viable option?Explain!

The arterioles (small arteries) are surrounded by circularmuscles. In order to increase the blood flow rate by a factor of 5,what percentage increase in the radius of a blood vessel is needed?(This is called vasodilatation.)

Arteries in the human body can be constricted when plaque buildsup on the inside walls. How does this affect the blood flow ratethrough this artery? Is it possible for the body to keep the flowrate constant? Explain!

goldgnu396

1. Considera normal individual who quickly goes from a supine posture to anerect one. Predict the changes (increase/decrease/no change) thatwill occur in the following cardiovascular parameters.Choose 2 (two) and give a complete reason for youranswer. Citations are not required, but may be instrumental formaking your case with your answer. (4 points, 2 point foreach. Be complete in your explanation)

a. Stroke Volume(increase/decrease/no change) - Why?

b. Heart Rate(increase/decrease/no change) - Why?

c. Cardiac Output(increase/decrease/no change) - Why?

d. Total PeripheralResistance (increase/decrease/no change) - Why?

e. Pressure at theroot (beginning) of the aorta (increase/decrease/no change) -Why?

f. Arterial pressurein foot (increase/decrease/no change) - Why?

g. Capillary pressurein foot (increase/decrease/no change) - Why?

h. Arterial pressurein cerebral blood vessels (increase/decrease/no change) - Why?

whiteelephant200

BIOL 2114L Lecture 5: Effects of Blood Vessel length on Blood Flow Rate BIOL 2114 Lab - PhysioEx Exercise 5 Activity 3

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