1) blood returning to the heart from the pulmonary circuit first enters the
a) right atrium.
b) right ventricle.
c) left atrium.
d) left ventricle.
e) conus arteriosus.
2) each of the following structures is associated with the sphenoid bone, except the
a) foramen ovale.
b) optic canals.
c) pterygoid processes.
d) sella turcica.
e) cribriform plate.
3) each of the following statements concerning oogenesis is true, except that
a) oogenesis begins before birth.
b) ova develop from stem cells called oogonia.
c) an ovum completes its last meiosis after it is fertilized.
d) about half the oogonia complete mitosis between birth and puberty.
e) by the time of their birth, girls have already lost about 80 percent of their oocytes.
4) a muscle that inserts on the body of the mandible is probably involved in
a) kissing.
b) blowing.
c) chewing.
d) frowning.
e) spitting.