BIO 139 FINAL EXAM WITH ALL QUESTIONS AND ANSWERS The endocrine system along with the nervous system controls all bodily activities. - ANSWER True The pancreas is referred to as the emergency gland. - ANSWER False The adrenal gland is both endocrine and nervous tissue. - ANSWER True The pituitary is really the master gland or area as it controls the hypothalamus. - ANSWER False Only 1% of the pancreas is endocrine in nature. - ANSWER True The anterior pituitary only stores and secretes 2 hormones, it produces no hormones of its own. - ANSWER False LH brings about ovulation during the female ovarian cycle. - ANSWER True The main male sex hormone is procalcitonin. - ANSWER False Estrogen is responsible for all of the female secondary sex hormones. - ANSWER True The adrenal gland produces the majority of male androgens in both males and females. - ANSWER True ANP is produced by the right atrium in response to stretch of the atrium due to and increase volume of blood and high blood pressure. - ANSWER True The interatrial septum is thick cardiac muscle similar to the interventricular septum. - ANSWER False Due to the direction of the conduction fibers the atria contract downward and the ventricles contract upward. - ANSWER True Sympathetic stimulation decreases both the rate of cardiac contraction and the strength of contraction. - ANSWER False The AV valves open and close due to muscular contraction and relaxation. - ANSWER True The second Phase of urine formation occurs in the glomeruli of the kidney. - ANSWER False Tubular reabsorbtion occurs primarily in the PCT. - ANSWER True The capillary beds of the kidney are less permeable than other capillary beds and operate under lower pressure. - ANSWER False The spongy urethra of a male is the same as the penile urethra. - ANSWER True The testes normally descend about the 3rd month of fetal development. - ANSWER False Testosterone is responsible for libido in both males and females. - ANSWER True The female ovary does not contain any potential gametes until that person reaches puberty. - ANSWER False Estrogen and progesterone are responsible for maintaining pregnancy. - ANSWER True The developing fetus is most susceptible to teratogens during the 3rd month of development. - ANSWER False Smoking destroys the cilia and elastic fibers in the aveolar wall and can cause emphysema. - ANSWER True Peristalsis occurs only throughout the small intestines. - ANSWER False The external anal sphincter is skeletal muscle and therefor voluntary in nature. - ANSWER True Peryer's Patches are located in the stomach wall only. - ANSWER False Swallowing involves both voluntary and involuntary processes. - ANSWER True The contents of the stomach are alkaline in nature. - ANSWER False The bile and pancreatic juice are alkaline in nature to neutralize the acidic nature of the stomach. - ANSWER True Voiding is a strictly voluntary process. - ANSWER False The middle portion of the small intestines is the jejunum. - ANSWER False
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