List the following organs or structures in the order that a sperm will pass through them after 1. leaving the testes: 2. Ductus deferens 3. Urethra 4. Epididymis
A) 3, 2, 1
B) 1, 2, 3
C) 1, 3, 2
D) 3, 1, 2
D
Explanation:
A) The ductus deferens carries spermatozoa from the epididymis to the urethra for transport out of the body.
B) The ductus deferens carries spermatozoa from the epididymis to the urethra for transport out of the body.
C) The ductus deferens carries spermatozoa from the epididymis to the urethra for transport out of the body.
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One characteristic of the immune response is specificity. This means that
A. immunity is carried on by a specific group of tissues of the immune system. B. immunity is directed against a particular pathogen. C. immunity starts in specialized tissues in the body. D. immunity is carried on by a specific group of cells of the immune system. E. immunity starts in defined organs in the body.
Subcutaneous injections involve administration of medicine into the:
A) papillary layer of the dermis. B) reticular layer of the dermis. C) hypodermis. D) epidermis.
If air temperature is higher than skin temperature, _______ becomes a means of heat loss through evaporation
A. sweating B. shivering C. fever D. chills E. vasoconstriction
Explain the feedback mechanism involved in true labor. Indicate the components of the feedback system (for example, identify the control center), their responses to stimuli, and the nature of the response (is it positive or negative feedback?)
What will be an ideal response?