Once threshold is reached, the rising phase of the action potential in pacemaker cells is brought about by the opening of ____-type ____ channels
Fill in the blank(s) with correct word
L, Ca2+
Anatomy & Physiology
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Describe the pelvic adaptations to childbearing in the female
Anatomy & Physiology
Melatonin is an antioxidant that
a. accelerates metabolism b. defends against free radicals c. lowers the concentration of blood sugar d. serves as a secondary messenger e. stimulates reduction reactions
Anatomy & Physiology
The ______ hair cells enhance the response of the _______ hair cells
a. inner/outer b. upper/lower c. lower/upper d. outer/inner
Anatomy & Physiology
Which of the following vitamins is essential for the production of clotting factors?
a) vitamin C b) vitamin K c) vitamin D d) vitamin A
Anatomy & Physiology