Which of the following best defines muscular strength?
A. the sum of forces produced by a muscle's repeated contractions until exhaustion
B. the theoretical maximum force a muscle can produce if all of its motor units are engaged
C. the ability to work without fatigue
D. the maximum force a muscle can produce in one effort
Answer: D
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Answer the following statements true (T) or false (F)
1. Cranial nerves are part of the peripheral nervous system. 2. Sensory nerves carry commands to muscles and glands. 3. Electrical impulses require a neurotransmitter to cross the synaptic cleft. 4. Myelin is a lipid molecule that insulates dendrites. 5. White matter is composed of myelinated nerve fibers.
A tracer drug refers to a
A) radioactive drug B) PET drug C) carrier drug D) radiopharmaceutical
Why is identity theft more commonly experienced by users of social media?
A) Social media websites are hacked often. B) Social media companies engage in fraud. C) Social media users often share private information online. D) Social media sites download computer viruses onto personal computers.
The brain and spinal cord constitute the ________ nervous system
A) peripheral B) central C) autonomic D) sympathetic