Question: 1. Valves in the
circulatory system prevent
o unn…
1. Valves in the
circulatory system prevent
o unnecessary entry of blood
o backwards flow of blood
o too much downstream pressure
2. Heart muscle
receives its oxygen and nutrient supply from
o atria
o ventricles
o aorta
o pulmonary veins
o coronary arteries
3. A double
circulatory system is important for
o large animals
o fast metabolism
o an emergency backup
4. The spleen
o filters blood
o contains a reserve of red blood cells
o forms white blood cells
5. Cardiac muscle
is connected by
o tendons
o intercalated disks
o connective tissue
o ligaments
o 2
6. The
respiratory surface must exchange ____ with the environment
o oxygen and CO2
o nutrients and waste
o water and plasma
7. Nervous system
input increases the ______ of heartbeat
o strength
o rate
o duration
o all of these
8. Fluid within
tissues is
o lymph
o plasma
o interstitial
9. Muscle cells
contain
o hemoglobin
o thromboglobin
o myoglobin
o immunoglobin
o all of these
10. Fluid within capillary beds of tissues
is
o lymph
o plasma
o interstitial
11. Red blood cells contain
o hemoglobin
o thromboglobin
o myoglobin
o immunoglobin
o all of these
12. Striated muscle refers to being
o situated at right angles to joints
o packed with contractile proteins
o establishing sheet-like arrays
o 2
13. Hypertrophic cardiomyopathy is when
o the heart beats too fast
o heart walls are too thick
o a rupture in a heart valve
14. Smooth muscle is
o voluntary
o controls movement of joints
o regulate heartbeat
o involuntary
o 4
15. The residual volume of lungs is
o the inner chest cavity
o prevents collapsed lungs
o is retained for emergency oxygen
16. Endoskeletons
o provide an armor shield
o impose a size restriction
o serve as attachment for muscles
17. Eye muscle is
o under a combination of voluntary and
involuntary input
o directional
o subject to rhymic contractions
o 1
18. Arteries have muscular walls to
o pump blood
o withstand blood pressure
o prevent backflow of blood
19. Exhalation is what kind of process?
o tiring
o active
o passive
o reflexive
20. Skeletal muscle precursors
o fuse to form tubules
o differentiate into tendons
o 1
21. The bones of birds are
o flat
o hollow
o cartilagenous
22. Muscle contractions is mediated by
o calcium
o sodium
o chlorine
o 1
see more
