Superoxide radicals have which of the following beneficial effects?
A. Promote proliferation of fibroblasts
B. Killing bacteria
C. Promote proliferation of lymphocytes
D. All of the choices are correct.
Answer: D
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What structure in skeletal muscle cells functions in calcium storage?
A) intermediate filament network B) sarcoplasmic reticulum C) mitochondria D) myofibrillar network
________ are large lymphoid nodules that are located in the walls of the pharynx.
A) Lymph nodes B) thymic corpuscles C) Thymus glands D) Tonsils E) Peyer's patches
What is hematology?
A) Hematology is the study of the heart. B) Hematology is the study of blood vessel structure and function. C) Hematology is the study of blood, blood-producing organs, and blood disorders. D) Hematology is the study of the immune system. E) Hematology is the study of cancers of the blood.
A very large, fast-adapting tactile receptor that is composed of a single dendrite enclosed by concentric layers of collagen is a
A) Ruffini corpuscle. B) lamellar corpuscle. C) tactile (Meissner) corpuscle. D) tactile (Merkel) disc. E) root hair plexus.