Which fetal shunt bypasses the lungs by directly connecting the right atrium and the left atrium?
A) ligamentum arteriosum
B) umbilical vein
C) foramen ovale
D) ductus arteriosus
E) ductus venosus
C
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The typical vertebra's ________, projecting laterally or dorsolaterally from the pedicles, serves as a site for muscle attachment.
A) spinous process B) transverse process C) odontoid process D) articular facet E) lamina
Which is not correct regarding the juxtaglomerular apparatus?
A. The macula densa cells monitor electrolyte concentrations in tubular fluid. B. Renin activates the renin-angiotensin pathway, resulting in aldosterone production. C. The juxtaglomerular cells are modified smooth muscle cells of the efferent arteriole. D. The macula densa cells are modified epithelial cells of the distal convoluted tubule. E. The juxtaglomerular cells release renin.
The flexor retinaculum manus, dorsal carpal, palmar carpal, radial collateral, and ulnar collateral are all ligaments associated with the wrist.
Answer the following statement true (T) or false (F)
A muscle fiber is ________
A) an arrangement of actin and myosin filaments deep within a muscle cell B) a rod-like structure consisting of sarcomeres placed end to end C) a muscle cell D) the elaborate arrangement of smooth endoplasmic reticulum inside a muscle cell