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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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
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