Which extraembryonic membrane is an important site of blood cell production?
A) placenta
B) yolk sac
C) amnion
D) allantois
B) yolk sac
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Which correctly lists a function of estrogens in females and testosterone in males?
A. They stimulate the secretion of luteinizing hormone (LH). B. They stimulate the secretion of gonadotropin-releasing hormone (GnRH). C. They prevent the pubertal growth spurt. D. They are responsible for epiphyseal plate closure. E. They stimulate the reabsorption of bone.
Epithelial tissue allows for movement and provides support for other types of tissues.?
Indicate whether the statement is true or false
Select the appropriate pathway for the steps of hemostasis
A) platelet plug formation, vascular spasms, coagulation, clot retraction, thrombolysis B) vascular spasms, coagulation, platelet plug formation, clot retraction, thrombolysis C) vascular spasms, platelet plug formation, coagulation, thrombolysis, clot retraction D) vascular spasms, platelet plug formation, coagulation, clot retraction, thrombolysis
A food that contains all nine essential amino acids is called a(n)
A. plasma protein. B. incomplete protein. C. complete protein. D. intracellular protein. E. adequate protein.