Calcium turns on cross bridges by physically repositioning the troponin-tropomyosin complex to uncover the actin cross-bridge binding sites in
a. skeletal muscle.
b. cardiac muscle.
c. smooth muscle.
d. both skeletal and cardiac muscle.
e. all of these answers.
D
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If a fatty meal has been ingested, the liver and gallbladder need to be alerted about the need for bile. The receptors that are responsible for sensing the fat in the ingested food are refered to as
A. bilireceptors. B. mechanoreceptors. C. chemoreceptors. D. omental neurons E. osmodetectors.
Which lobe is important for voluntary motor functions, and which lobe receives and interprets sensory input for hearing?
A) frontal and temporal B) frontal and occipital C) parietal and occipital D) temporal and occipital
When is hydrolysis used?
A) To remove water molecules from macromolecules B) To merge smaller molecules into macromolecules C) To break apart macromolecules D) To remove ethanol molecules from macromolecules
Which of the following structures lies on the outside surface of the heart and is an integral part of the cardiac wall?
a. the epicardium b. The parietal layer of serous pericardium c. the fibrous pericardium d. the pericardial sac