The heart valves
A. stabilize and hold the arteries leaving the heart.
B. permit the passage of blood in one direction.
C. separate the right and left sides of the heart.
D. are only used in the fetal heart.
E. direct the conduction impulse through the heart muscle.
B
You might also like to view...
In the diagram, which labeled structures are atrioventricular valves?
a) B only b) D only c) A and C d) B and D e) A, B, C and D
In which abdominopelvic cavity is the stomach located?
A) right upper B) right lower C) left upper D) left lower
What occurs when wound edges are far apart?
A. Neutrophil inactivation B. Edema C. Granulation tissue D. Secondary union
Describe a hypothetical situation in which two isolated human populations evolve very different muscle fiber composition. In other words, what environmental conditions or food-gathering strategies might cause a prevalence of one fiber type (fast-twitch versus slow-twitch) to be more adaptive than another?
What will be an ideal response?