Which of these descriptions best matches the term bronchiolar smooth muscle?
A) accessory muscle of expiration
B) accessory muscle of inspiration
C) primary muscle of inspiration
D) contraction increases airway resistance
E) affects lung compliance
Ans: D) contraction increases airway resistance
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Urine formed by the nephrons first drains into these
a) H b) I c) J d) K e) L
The terminal cisternae are structural features of the
A) myofilaments. B) sarcoplasmic reticula. C) myofibrils. D) I bands. E) sarcolemma.
The presence of what hormone in the urine forms the basis of pregnancy diagnosis tests?
a. estrogen b. progesterone c. prolactin d. human chorionic gonadotropin e. LH
How can you tell that the karyotype shown here is male?
A) The 23rd pair of chromosomes is XX. B) The 23rd pair of chromosomes is XY. C) The 23rd pair of chromosomes is YY. D) The 23rd pair of chromosomes is YO. E) There are only 22 pairs of chromosomes.