Chapter Questions
The velocity of blood flow ___ when blood enters capillaries.a. increasesb. decreasesc. stays the same
All vertebrates have ___.a. an open circulatory systemb. a closed circulatory systemc. a four-chambered bheartd. both b and c
Which are not found in the blood?a. plasmab. blood cells and plateletsc. gases and dissolved substancesd. All of the above are found in blood.
A person who has type O blood ___.a. can receive a transfusion of blood of any typeb. can donate blood to a person of any blood typec. can donate blood only to a person of type $\mathrm{O}$d. cannot be a blood donor
In the blood, most oxygen is transported ___.a. in red blood cellsb. in white blood cellsc. bound to hemoglobind. both a and $c$
Which has a more muscular wall?a. right atriumb. left ventricle
Blood flows directly from the left atrium to ___.a. the aortab. the left ventriclec. the right atriumd. the pulmonary arteries
All blood cells descend from stem cells in ___.a. the spleenb. the left ventriclec. the right atriumd. bone marrow
Contraction of ___ drives the flow of blood through the aorta and pulmonary arteries.a. atriab. arteriolesc. ventriclesd. skeletal muscle
Blood pressure is highest in the ___ and lowest in the ___.a. arteries; veinsb. arterioles; venulesc. veins; arteriesd. capillaries; arterioles
At rest, the largest volume of blood is in ___.a. arteriesb. capillariesc. veinsd. arterioles
At the start of a capillary bed (closest to arterioles), ultrafiltration movesa. proteins into the capillaryb. interstitial fluid into the capillaryc. proteins into the interstitial fluidd. water, ions, and small solutes into interstitial fluid
Which is not a function of the lymphatic system?a. filters out pathogensb. returns fluid to the circulatory systemc. helps certain white blood cells matured. distributes oxygen to the tissues
Match the components with their functions.$$ \text { capillary bedd } \quad \quad\quad\quad\quad \text { a. filters out pathogens } $$$$ \text { lymph node } \quad \quad\quad\quad\quad \text { b. cardiac pacemaker } $$$$ \text { blood } \quad \quad\quad\quad\quad \text { c. main blood volume reservoir } $$$$ \text { ventricle } \quad \quad\quad\quad\quad \text { d. largest artery } $$$$ \text { SA node } \quad \quad\quad\quad\quad \text { e. fluid connective tissue } $$$$ \text { veins } \quad \quad\quad\quad\quad \text { f. zone of diffusion } $$$$ \text { aorta } \quad \quad\quad\quad\quad \text { g. contractions drive blood circulation } $$