Which statement correctly compares isotonic and isometric contractions?
A. Isotonic contractions involve increased tension in the muscle that results in movement while isometric contractions involve decreased tension in the muscle resulting in no movement.
B. Isometric contractions involve increased tension in the muscle that results in movement, while isotonic contractions involve increased tension in the muscle resulting in no movement.
C. Isotonic contractions involve increased tension in the muscle that results in no movement, while isometric contractions involve increased tension in the muscle that results in movement.
D. Isotonic contractions involve increased tension in the muscle that results in movement, while isometric contractions involve increased tension in the muscle resulting in no movement.
Answer: D
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In typical women of reproductive age, the epithelial cells lining the uterus (the endometrium) die and are shed from the body roughly once every month, in the process of menstruation. The triggers in this process include chemical (hormonal) changes and contraction of the blood vessels in the lining. Cell death may be a result of either apoptosis or necrosis. Give the characteristics of each
process. Devise an argument for classifying the process of menstruation as an example of apoptosis, and then argue for classifying it as necrosis. Which is correct? What will be an ideal response?
Osteons are also called ________ systems.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not a function of the reproductive system?
A. Development and nourishment of a new individual B. Production of gametes C. Creation of antibodies D. Fertilization E. Production of reproductive hormones
Each of the following lists some of the tissue layers of the digestive tract. Which one has them in correct order from lumen to external surface?
A) Lamina propria, muscularis mucosae, submucosa, muscularis externa, serosa B) Mucosa, submucosa, muscularis mucosae, muscularis externa, lamina propria C) Mucosa, submucosa, muscularis externa, lamina propria, serosa D) Mucosa, muscularis mucosae, submucosa, muscularis externa, lamina propria E) Serosa, lamina propria, submucosa, muscularis mucosae, muscularis externa