Small, narrow muscles associated with the flexor tendons in the hands and feet are called __________.
Fill in the blank(s) with the appropriate word(s).
lumbricals
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What is the only human cell with a flagellum?
A. red blood cells B. macrophage (large, mobile white blood cell) C. spermatozoa D. columnar cells of small intestines E. columnar cells of upper respiratory tract
Ejaculation involves sympathetic neurons, which stimulate smooth muscle cells, and somatic motor neurons, which stimulate skeletal muscle cells
Indicate whether the statement is true or false
Macrophages are derived from ________.
A. basophils B. monocytes C. neutrophils D. lymphocytes E. eosinophils
Why is it important that cardiac tissue contain many mitochondria and capillaries?
A) Cardiac tissue primarily uses mitochondria for fermentation to generate ATP and capillaries provide a way to get rid of the lactic acid. B) Cardiac tissue primarily uses mitochondria for anaerobic respiration to generate ATP and capillaries get rid of the waste generated. C) Cardiac tissue primarily uses mitochondria for glycolysis to generate ATP and capillaries provide the oxygen and nutrients for this process. D) Cardiac tissue is metabolically active and dependent on mitochondrial activity to use aerobic respiration to generate ATP and capillaries provide the oxygen and nutrients for this process. E) Cardiac tissue is metabolically active and dependent on the mitochondrial activity for the breakdown of fatty acids during beta-oxidation and the capillaries provide the fatty acids for this process.