Birth control pills act as contraceptives by
a. preventing development of the endometrium into a suitable site for implantation
b. preventing ovulation by inhibiting GnRH and thus FSH and LH secretion
c. killing sperm
d. precipitating in the cervical canal to act as a barrier to sperm entry
e. increasing muscular contractions in the female reproductive tract so that ovulated eggs are flushed out before they have a chance to be fertilized
B
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What harmful compound does the pancreas release when it does not get enough blood due to circulatory shock?
a. vasopressin b. acetylcholine c. protease d. myocardial toxic factor e. insulin
Phagocytes can destroy foreign microbes only after they have engulfed these invaders
Indicate whether the statement is true or false
The type of joint between the carpal (trapezium) and the first metacarpal is a ________ joint
A) saddle B) hinge C) condylar D) plane
Match the following:
A) Erythropoietin B) Prostaglandin derivates such as Thrombozane A2 C) Spectrin D) Interleukins and CSFs E) Heparin 1) Produced by platelets. 2) A fibrous protein that gives shape to an RBC plasma membrane. 3) Hormone that stimulates production of RBCs. 4) Stimulates WBC production. 5) Natural anticoagulant found in basophils.