41) In the early fetus, all of the following are parts of the chorionic villi
except
the
A) syncytiotrophoblast.
B) cytotrophoblast.
C) extraembryonic mesoderm.
D) decidua.
42) Inguinal hernias
A) always reach the scrotum.
B) always enter the inguinal canal.
C) occur with equal frequency in males and females.
D) are signs of old age and almost never congenital.
43) Hypospadias
A) never occurs in females.
B) is characterized by the absence of a urethra.
C) cannot be detected through an examination of the outside of a baby's body.
D) has no effects until puberty, when males start producing sperm.
44) The function of the cremaster muscle is to
A) squeeze semen from the urethra during ejaculation.
B) maintain erection in both sexes.
C) increase intra-abdominal pressure during childbirth.
D) alter the position of the testes in the scrotal sac with increases in ambient temperature.
45) By undergoing meiosis, each primary spermatocyte ultimately gives rise to how many sperm cells?
A) two
B) four
C) eight
D) billions
46) Of the following tubes, which is the only one that lies partly outside the testis?
A) tubulus rectus
B) seminiferous tubule
C) rete testis
D) efferent ductule
47) Which of the following anchors the uterus into an anteverted position in the pelvis?
A) broad ligament
B) ovarian ligament
C) round ligament
D) suspensory ligament
48) The ovarian cortex consists of
A) follicles and connective tissue.
B) the largest blood vessels of the ovary.
C) the hilus of the ovary.
D) the mesovarium.
49) The female uterine cycle begins
A) at ovulation.
B) on the first day of menstruation.
C) at the end of menstruation.
D) every six weeks.
50) In addition to remaining granulosa cells, which of the following cell types make up the corpus luteum?
A) oocyte
B) theca cells
C) cells of the corona radiata
D) interstitial cells