What is the correct sequence of the journey for mature sperm?
A. Ejaculatory duct - prostatic urethra - epididymis - ductus deferens - penile urethra - vagina - uterus - uterine tube
B. Epididymis - ductus deferens - ejaculatory duct - prostatic urethra - penile urethra - uterine tube - vagina - uterus
C. Epididymis - ductus deferens - ejaculatory duct - prostatic urethra - penile urethra - vagina - uterus - uterine tube
D. Epididymis - ductus deferens - prostatic urethra - ejaculatory duct - penile urethra - vagina - uterus - uterine tube
Answer: C
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With damage to nerve fibers, larger distances between the site of damage and the target structure innervated result in _________ chances of successful regeneration
A. increased B. decreased
The airplane you are riding suddenly depressurizes at 10,000 feet in the air. This causes the PO2 of the airplane's air to drastically decrease. You pass out before you can put on your oxygen mask. After a few seconds, the PO2 in your alveoli rapidly drops to 60 mmHg instead of the normal 104 mmHg. How will this affect blood gas concentrations?
A. Blood PO2 will become low and much less oxygen will be delivered to tissues until cabin pressure returns. B. PO2 in the alveoli will be so low that oxygen will diffuse from hemoglobin into the alveoli, where it is exhaled. This causes blood oxygen concentrations to drop throughout the body. C. PO2 in the alveoli will be too low for gas exchange to even occur, so tissues will receive no oxygen during the depressurization event. D. Blood PCO2 will increase because the air contains less oxygen.
A colonoscopy is a common diagnostic tool to check for colorectal cancer. Sometimes an investigation of the distal segment of the colon is all that is needed. What is the name of this distal segment of the colon?
A. cecum B. mesocolon C. sigmoid D. ileum
The __________ caudal fins of cruising sharks are much taller on the dorsal side than on the ventral side
Fill in the blank with the correct word.