Smokers are more susceptible to respiratory infections because
A) their respiratory passages lose cilia, which would otherwise remove bacteria.
B) their respiratory passages overproduce cilia, to which bacteria cling.
C) the respiratory passages have too little mucus.
D) they congregate in small areas to smoke.
A
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Answer the following statements true (T) or false (F)
1. Systemic circulation begins in the left ventricle or aorta and ends in the vena cava or right atrium. 2. Pulmonary circulation begins in the pulmonary artery or right ventricle and ends in the pulmonary vein or right atrium. 3. The hepatic portal vein connects the blood leaving the liver to the inferior vena cava. 4. The hepatic portal system sends blood through two sets of capillary beds rather than the usual one set of capillaries. 5. One function of the hepatic portal system is to help maintain glucose homeostasis in the blood.
In terms of controlling micturition, the somatic nervous system innervates the ________, the 86) parasympathetic nervous system innervates the ________, and the sympathetic nervous system innervates the ________.
A) external urethral sphincter : detrusor muscle : internal urethral sphincter B) internal urethral sphincter : detrusor muscle : external urethral sphincter C) bladder : micturition reflex : external urethral sphincter D) internal urethral sphincter : external urethral sphincter : detrusor muscle E) bladder skeletal muscle : bladder smooth muscle : external urethral sphincter
Explain the role of oxytocin in lactation
What will be an ideal response?
Which of the following terms might be found in the name of a muscle that decreases the angle at a joint?
A) abductor B) adductor C) extensor D) flexor