The semitendinosus is an example of what muscle shape?
A. Sphincter
B. Triangular
C. Pennate
D. Convergent
E. Fusiform
Answer: E
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Assume that the import of a particular amino acid across the plasma membrane is observed (1 ) to occur only down its concentration gradient and (2 ) to slow when a different but similar amino acid is added to the extracellular fluid. The movement of the amino acid through the membrane is most likely by
A) osmosis. B) diffusion. C) facilitated diffusion. D) active transport. E) pinocytosis.
Answer the following statements true (T) or false (F)
1. An organ is a group of different types of cells that function together to perform a specific function. 2. A system is a group of organs arranged in such a way that they can perform a more complex function. 3. Stem cells may be able to be used for tissue or organ engineering. 4. The skin is the most important organ of the integumentary system. 5. Hair, nails, and teeth are called accessory structures of the skin.
The location of the testes allows them to:
a. be maintained at a temperature about 3 degrees below normal body temperature b. be insured of an adequate blood supply c. be maintained at a temperature about 3 degrees above normal body temperature d. both B and C above
Which of the following statements about special senses is correct?
Special sense input is carried by both spinal and cranial neurons. Special sense stimuli are detected by the receptive endings of sensory neurons. All special senses, except smell, rely on specialized receptor cells to detect stimuli. Special senses detect stimuli such as touch, pain, and temperature.