The storage and release of calcium ions is the key function of the:
A) sarcoplasm. B) mitochondrion.
C) sarcoplasmic reticulum. D) sarcolemma.
Answer: C
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The following are structural components of the conducting system of the heart. 1. Purkinje fibers 2. AV bundle 3. AV node 4. SA node 5. bundle branches The sequence in which excitation would move through this system is
A) 1, 4, 3, 2, 5. B) 3, 2, 4, 5, 1. C) 3, 5, 4, 2, 1. D) 4, 3, 2, 5, 1. E) 4, 2, 3, 5, 1.
The __________ is the dorsal region of a turtle shell
Fill in the blank(s) with correct word
Which substance is not secreted into the tubule?
a. hydrogen ions b. potassium ions c. organic ions d. b and c are not secreted e. renin
Which of the following describes a function of the follicle?
A. The follicle protects the oocyte from the female's immune system. B. The follicle removes wastes from the oocyte. C. The follicle provides nutrients for the oocyte. D. All of these are correct.