Small muscle masses attached to the chordae tendineae are the ________.
A) trabeculae carneae
B) pectinate muscles
C) papillary muscles
D) venae cavae
C) papillary muscles
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What differentiates a closed circulatory system from an open circulatory system?
A) The presence of a heart B) The presence of a circulating fluid C) The presence of vessels D) Direct contact of circulating fluid with tissues
At the end of a normal expiration when outward air flow has ceased,
a. intra-alveolar pressure is less than atmospheric pressure. b. intra-alveolar pressure is greater than atmospheric pressure. c. intra-alveolar pressure is equal to atmospheric pressure. d. intrapleural pressure is greater than atmospheric pressure. e. intrapleural pressure is greater than intra-alveolar pressure.
These fossae of the scapula contain muscles that stabilize the shoulder
A) lateral, inferior, and subscapular B) glenoid, acromial and coracoid C) infraspinous, spinous, and medial D) infraspinous fossa, subscapular fossa, and supraspinous fossa
What do fibroblasts contribute to bone repair?
A) Fibroblasts form new collagen fibers to bridge the gap between bone fragments. B) Fibroblasts secrete hyaline cartilage to form a soft callus. C) Fibroblasts direct the transition from primary bone to secondary bone. D) Fibroblasts form the hematoma that involves a mass of blood cells.