The period of gestation when organs and organ systems complete most of their development and the fetus looks distinctly human is the ________ trimester
A) first
B) second
C) third
B
You might also like to view...
The crural interosseous membrane extends between the
A) radius and ulna. B) talus and calcaneus. C) humerus and radius. D) tibia and fibula. E) femur and tibia.
Respiration is inhibited throughout the entire time that swallowing is taking place
Indicate whether the statement is true or false
Immune tolerance preventing a normal immune system from attacking the individual's own tissues involves
a. clonal deletion. b. clonal anergy. c. receptor editing. d. immunological ignorance. e. all of these.
Which event typically occurs at the start of a cardiac cycle?
A) Ventricular blood pressure drops until reverse blood flow pushes the cusps of the semilunar valves together. B) Atrial contraction forces a small amount of blood into the relaxed ventricles. C) The semilunar valves open and blood is ejected. D) Ventricular contraction pushes the atrioventricular valves closed. E) The atrioventricular valves opens and the ventricles fill passively.