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Human Biology

Cecie Starr, Beverly McMillan

Chapter 7

Circulation: The Heart and Blood Vessels - all with Video Answers

Educators


Chapter Questions

03:56

Problem 1

Cells obtain nutrients from and deposit waste into __________.
a. blood
b. lymph vessels
c. each other
d. both a and b

Norma Kimmel
Norma Kimmel
Numerade Educator
03:45

Problem 2

The contraction phase of the heartbeat is __________ ; the relaxation phase is __________.

Norma Kimmel
Norma Kimmel
Numerade Educator
04:47

Problem 3

In the pulmonary circuit, the heart's __________ half pumps __________ blood to capillary beds inside the lungs; then __________ blood flows to the heart.
a. left; deoxygenated; oxygenated
b. right; deoxygenated; oxygenated
c. left; oxygenated; deoxygenated
d. right; oxygenated; deoxygenated

Norma Kimmel
Norma Kimmel
Numerade Educator
03:47

Problem 4

In the systemic circuit, the heart's __________ half pumps __________ blood to all body regions; then __________ blood flows to the heart.
a. left; deoxygenated; oxygenated
b. right; deoxygenated; oxygenated
c. left; oxygenated; deoxygenated
d. right; oxygenated; deoxygenated

Norma Kimmel
Norma Kimmel
Numerade Educator
03:06

Problem 5

After you eat, blood passing through the GI tract travels through the __________ to a capillary bed in the __________.
a. aorta; liver
b. hepatic portal vein; liver
c. hepatic vein; spleen
d. renal arteries; kidneys

Norma Kimmel
Norma Kimmel
Numerade Educator
04:06

Problem 6

The cardiac pacemaker ___________.
a. sets the normal rate of heartbeat
b. is the same as the AV node
c. establishes resting blood pressure
d. all of these are correct

Norma Kimmel
Norma Kimmel
Numerade Educator
05:37

Problem 7

Blood pressure is ___________.
a. generated by heart contractions
b. exerted against vessel walls
c. healthiest when it is under $120 / 80$
d. all of these are correct

Norma Kimmel
Norma Kimmel
Numerade Educator
02:47

Problem 8

Blood pressure is highest in __________ and lowest in __________.
a. arteries; veins
b. arteries; relaxed atria
c. arteries; ventricles
d. arterioles; veins

Norma Kimmel
Norma Kimmel
Numerade Educator
05:01

Problem 9

__________ contraction drives blood through the systemic and pulmonary circuits; outside the heart, blood pressure is highest in the __________.
a. Atrial; ventricles
b. Atrial; atria
c. Ventricular; arteries
d. Ventricular; aorta

Norma Kimmel
Norma Kimmel
Numerade Educator
05:24

Problem 10

Match the type of blood vessel with its major function.
$$\begin{array}{cc}\text{______arteries} && \text {a. diffusiont}\end{array}$$
$$\begin{array}{cc}\text{______arterioles} && \text {b. control of blood distribution}\end{array}$$
$$\begin{array}{cc}\text{______capillaries} && \text {c. transport, blood volume reservoirs}\end{array}$$
$$\begin{array}{cc}\text{______veins} && \text {d. blood transport and pressure regulators}\end{array}$$

Norma Kimmel
Norma Kimmel
Numerade Educator
03:43

Problem 11

Match these three circulation components with their descriptions.
$$\begin{array}{cc}\text{______capillary beds} && \text {a. two atria, two ventricles}\end{array}$$
$$\begin{array}{cc}\text{______heart chambers} && \text {b. driving force for blood}\end{array}$$
$$\begin{array}{cc}\text{______heart contractions} && \text {c. zones of diffusion}\end{array}$$

Norma Kimmel
Norma Kimmel
Numerade Educator