Increases in weight of the conceptus are largest during the ________ two months of pregnancy.
A. middle
B. last
C. first
Answer: B
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What is the dens?
A. A rounded prominence on the vertebra prominens B. A tooth-like process on the axis C. A projection on the transverse process of cervical vertebrae D. A concavity unique to C1 E. A bony protrusion inferior to the costal facets
The ________ group of neurons contains mostly inspiratory neurons. The ________ group of neurons controls muscles used for active expiration and some inspiratory muscles.
Fill in the blank(s) with the appropriate word(s).
Each 100 mL of blood leaving the alveolar capillaries carries away roughly ________ of oxygen
A) 10 mL B) 20 mL C) 30 mL D) 50 mL E) 75 mL
Movements of the body are usually smooth and occur at differing rates because
A. of the all-or-none principle. B. most muscle contractions closely resemble individual muscle twitches. C. they are a mixture of isotonic and isometric contractions. D. motor units contract out of phase at their own particular rates. E. muscles of different sizes contract at different rates.