Through what openings of the nose does inhaled air enter the upper respiratory tract?
A) posterior nares B) nasopharynx C) anterior nares D) nasal cavity
Answer: C
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Expiratory neurons
a. are found in both the DRG and VRG. b. send impulses to the expiratory muscles during normal quiet breathing. c. are stimulated by the pneumotaxic center. d. are stimulated by the inspiratory neurons and in turn inhibit the inspiratory neurons. e. none of these answers.
What is the major function of brown adipose tissue?
A. Decrease body temperature B. Shivering thermogenesis C. Decreasing metabolic rate D. Nonshivering thermogenesis
During a marathon which of the following hormones is least likely to be released by the runner?
A) epinephrine B) antidiuretic hormone (ADH) C) angiotensin II D) atrial natriuretic peptide (ANP)
Which muscle is the primary dorsiflexor of the foot at the ankle?
A. Fibularis brevis B. Extensor digitorum longus C. Gracilis D. Extensor hallucis longus E. Tibialis anterior