How do calcium ions effect the changes leading to muscle contraction?
Fill in the blank(s) with the appropriate word(s).
Calcium ions are constantly transported out of the sarcoplasm and into the sarcoplasmic reticulum to be released when electrical changes occur in the membranes of the T tubules. The duration of the contraction depends upon the duration of the electrical events.
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Which muscle is part of the urogenital diaphragm and constricts the urethra to voluntarily inhibit urination?
A. External urethral sphincter B. Bulbospongiosus C. Superficial transverse perineal muscle D. Ischiocavernosus E. Pubococcygeus
________ develops when sebaceous glands oversecrete sebum.
A. A bedsore B. A contusion C. Acne D. Athlete's foot
The axon hillock makes up the ________ segment of a neuron
Fill in the blank with correct word.
Analysis of a glandular secretion indicates that it contains some DNA, RNA, and membrane components such as phospholipids. What kind of secretion is this and why?
What will be an ideal response?