The heart is in the ________ cavity and is covered by the ________.
A. cranial; meninges
B. thoracic; pericardium
C. thoracic; pleura
D. pericardial; pleura
E. pericardial; peritoneum
Answer: B
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The single most abundant protein in the body is ________.
A) DNA B) hemoglobin C) collagen D) glucose
The utricle and saccule contain the sensory receptors associated with the sense of
dynamic equilibrium. Indicate whether the statement is true or false
Mutations in polypeptides called ________ that are produced by cytotoxic T cells could prevent T cells from destroying infected cells.
A. interferons B. antibodies C. histamines D. perforins
If someone's heart beats at 70 beats per minute and with each contraction of the ventricle 70 mL of blood is ejected from the ventricles, what is the person's stroke volume??
A) ?1400 B) ?4900 C) ?70