Within a lymph node, what cells engulf and destroy bacteria, viruses, and other foreign substances in the lymph?
A) trabeculae
B) macrophages
C) follicles
D) erythrocytes
E) lymphocytes
B
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Which cell secretes the hormone that promotes production of hydrochloric acid?
a) Neck cell b) Chief cell c) G cell d) Chyme cell e) Parietal cell
Describe the simplest type of unicellular exocrine gland
A) Simple alveolar (acinar) gland; this is found during embryonic development and not in adults. B) Simple tubular gland; this gland has a single duct that does not divide at the straight glandular cells. C) Simple coiled tubular gland; this has a single duct but a coiled secretory area. D) Goblet cell; this cell is scattered among absorptive cells in the intestines. E) Simple holocrine cell; this cell will burst to release its secretions.
The organelles that digest engulfed bacteria and cell debris are the:
A. peroxisomes. B. endosomes. C. lysosomes. D. ribosomes. E. mitochondria.
The clavicle articulates with all of the following except _____.
a. the acromion of the scapula b. the cartilage of the first rib c. the humerus d. the manubrium of the sternum