You have observed an extrasystole in your recording of frog heart contractile activity. Where did it occur?
A) during ventricular diastole B) during ventricular systole C) during atrial contraction
Answer: A
Anatomy & Physiology
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What muscular changes are involved in the breathing process?
What will be an ideal response?
Anatomy & Physiology
Antioxidants neutralize ________________________________________ radicals
Fill in the blank(s) with correct word
Anatomy & Physiology
The action potential of a muscle fiber occurs
A. along the sarcolemma and down the T-tubules. B. at the end plate. C. in the mitochondria. D. within the sarcoplasmic reticulum.
Anatomy & Physiology
What is the name for a biological catalyst?
A) enzyme B) active site C) polysaccharide D) substrate
Anatomy & Physiology