What are the two major factors affecting blood flow rates?
a. neural and hormonal control mechanisms
b. diameter and length of blood vessels
c. turbulence and viscosity
d. pressure and resistance
Answer: d. pressure and resistance
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Match the level of organization with its definition below.
1. cell 2. tissue 3. organs 4. organ systems A. a collection of similar cells that carry out similar functions B. the smallest living unit C. a collection of different tissues that carry out related functions D. groups of organs functioning in a coordinated manner
The superior gluteal nerve arises from the:
a. cervical plexus b. brachial plexus c. lumbar plexus d. sacral plexus
The spinal cord exhibits some reflexes that do not involve the brain.
Answer the following statement true (T) or false (F)
Which of the following lists exclusively contains only variables that determine a person's basal metabolic rate?
A. gender, weight, age, and muscular activity B. age, height, and recent ingestion of food C. environmental temperature variations, body surface area, and emotional state D. gender, age, body surface area, and circulating levels of thyroid hormone E. environmental temperature, muscular activity, and emotional state