Your grandmother steps off a sidewalk, then collapses. She later tells you she has a "broken hip". However, having studied anatomy you know it is probably which structure that has been fractured?
A. The femoral neck
B. The femoral shaft
C. The acetabulum
D. The obturator foramen
A. The femoral neck
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Which type of connective tissue fiber provides strength and resists stretching?
A. Collagen B. Elastic C. Reticular D. Keratin
Which of the following chemical reactions best represents the synthesis of ATP?
A. ADP + Pi + energy ? ATP + H2O B. ATP + energy ? ADP + H2O C. ATP + H2O ? ADP + Pi + energy D. ATP + ADP ? ATP E. ADP + ADP + ADP ?ATP + energy
The H zone
a. is the area within the middle of the A band where the thin filaments do not reach. b. shortens or disappears during contraction. c. contains only thick filaments. d. both (a) and (b) above. e. all of these answers.
Hemoglobin can act as a buffer by accepting protons. When hemoglobin accepts a hydrogen ion it is referred to as
A. oxidized hemoglobin. B. pentameric hemoglobin. C. carbaminohemoglobin. D. reduced hemoglobin.