A(n) ____________________ is a structure made up of several tissues grouped together to perform a single function.?
Fill in the blank(s) with correct word
organ
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Dermatitis is an inflammatory process that can be caused by ________ or chemicals.
A. scabies B. general warts C. acne D. plants
Due to anatomical pathways that involve the limbic system, which type of sensation can lead to the most immediate emotional reactions?
A. Touch B. Equilibrium C. Taste D. Hearing E. Smell
When a baby suckles at its mother's breast the stimulus at the breast is sent to the mother's brain (a region called the hypothalamus)
The brain responds by releasing hormones to stimulate the production and the ejection of milk from the breast. This helps the newborn to receive nourishment and encourages more suckling. This example is best described as a ________. A) negative feedback B) necessary life function C) loss of homeostasis D) positive feedback
The midpiece of the sperm:
a. supplies enzymes to break down the covering of the ovum b. contains mitochondria c. holds 23 chromosomes d. is a whip-like structure that provides movement for the sperm