Chapter 38

Most land animals have ________ fertilization. a. internal b. external

An individual that makes Beggs and sperm is a________. a. zygote b. hermaphrodite c. gastrula d. gamete

Testosterone is secreted by the ________. a. testes b. hypothalamus c. prostate gland d. pituitary gland

A midcycle surge of ________ triggers ovulation. a. estrogens b. progesterone c. LH d. FSH

The corpus luteum develops from________. a. a polar body b. follicle cells c. a secondary oocyte d. spermatogonia

Match each term with the most suitable description. ________epididymis ________vas deferens ________vagina ________seminal vesicle ________penis ________oviduct ________uterus a. conveys oocyte to uteruss b. can be inflated by blood c. where sperm mature d. target of vasectomy e. main contributor to semen f. sheds lining monthly g. birth canal

A homeotic gene regulates________ . a. body part formation b. milk production c. secondary sexual traits d. sperm formation

A human blastocyst normally implants in ________. a. an oviduct b. a seminiferous tubule c. the uterus d. the vagina

Put these human developmental events in order, from earliest to latest. a. blastocyst forms b. heart begins beating c. gastrulation d. implantation e. breathing practice begins f. neural tube forms

Most miscarriages________. a. occur in the first trimester c. are caused by exposure to a pathogen b. can be prevented by a cesarean section d. threaten the life of the mother

________removes webs between developing digits. a. Gastrulation b. Lactation c. Apoptosis d. Implantation

Match each hormone with its effect. ________oxytocin ________testosterone ________LH \(\mathrm{GnRH}\) ________\(\mathrm{FSH}\) ________\(\mathrm{HCG}\) ________prolactin a. growth of facial hair b. uterus contracts c. \(\mathrm{LH}\), FSH are released d. surge causes ovulation e. follicle develops \(f\). milk is produced g. corpus luteum is maintained