The _____ is the outer layer of the skin.
Fill in the blank(s) with the appropriate word(s).
Answer: epidermis
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What is a hormone?
A. a chemical released from a nerve cell that affects nearby cells across a synapse B. a chemical released from an endocrine gland that affects target cells without entering the bloodstream C. a chemical found in the blood that catalyzes the destruction of ingested toxins and foreign substances D. a chemical excreted from sweat gland that signals other individuals about the physiological status of the body E. a chemical regulator secreted from an endocrine gland that travels through the bloodstream to affect target cells
The teniae coli:
A) are located along the jejunum. B) compose the muscular wall of the appendix. C) are found along the walls of the rectum. D) are the most superficial part of the sphincter ani. E) may be used during an appendectomy to locate the appendix.
Normally menstruation occurs when ________.
A) blood levels of FSH fall off B) blood levels of estrogen and progesterone decrease C) blood levels of estrogen and progesterone increase D) the corpus luteum secretes estrogen
Arthritis is
A. the most common type of arthritis. B. a condition that may involve an autoimmune disease. C. an inflammation of any joint. D. a metabolic disorder caused by increased uric acid in blood. E. a bacterial infection transmitted by ticks.