The hormone that lowers the calcium ion concentration in the blood is called ____________________.?
Fill in the blank(s) with correct word
calcitonin
Anatomy & Physiology
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At what stage does a developing sperm cell begin to grow a tail?
A. Primary spermatocyte B. Spermatozoon C. Spermatogonium D. Spermatid E. Secondary spermatocyte
Anatomy & Physiology
In order for local potentials to trigger an action potential, the membrane must reach a level called the ______
A. maximum potential B. spike potential C. threshold D. resting membrane potential
Anatomy & Physiology
Vitamin D is needed by the body to
A. make blood cells. B. help the skin tan. C. form keratin. D. absorb calcium from food.
Anatomy & Physiology
Which of the following tissues is specialized for energy storage and thermal insulation?
A. Adipose B. Skeletal muscle C. Hyaline cartilage D. Nervous E. Stratified cuboidal epithelium
Anatomy & Physiology