An enzyme secreted by the gastric mucosa of a newborn that coagulates milk proteins is
A) pepsin.
B) trypsin.
C) gastrin.
D) rennin.
E) cholecystokinin.
D
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Which hormone, produced by the pituitary gland, is responsible for decreased urination?
A) Luteinizing hormone B) Antidiuretic hormone C) Prolactin D) Adrenocorticotropic hormone
Answer the following statements true (T) or false (F)
1. One function of the sex hormones is to stimulate the development of the secondary sex characteristics. 2. When the tunica adventitia enters the testicle it is called the seminiferous tubule. 3. The bulk of the testes is made up of interstitial cells that produce testosterone. 4. Sperm precursors or stem cells are called spermatogonia. 5. Under the influence of FSH, the spermatogonium divides to form two primary spermatocytes.
A clot or plaque which forms on the inside of blood vessel walls is called a(an)
A. sclerosis. B. arteriosus. C. thrombus. D. embolus. E. plaque.
The cylindrical shaped organelle with nine groups of microtubule triplets is called
A) microfilaments. B) cilia. C) microsomes. D) centrioles. E) thick filaments.