Which of the following is NOT considered a hypersensitivity reaction?
A) a rash caused by poison ivy
B) immune system attack on the thyroid gland
C) itchy eyes and a runny nose in a dusty environment
D) dermatitis at the site of a metal watchband
E) breaking into hives after eating strawberries
B
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In what order would a vaccination needle pass
through the layers of the skin?
a. dermis-hypodermis-epidermis b. dermis-epidermis-hypodermis c. hypodermis-dermis-epidermis d. epidermis-dermis-hypodermis e. epidermis-hypodermis-dermis
All of the following are true regarding coral reefs
EXCEPT that they a. develop in warm, clear waters near coasts or volcanic islands. b. are found between 25 degrees north and south. c. are wave-resistant formations. d. are areas of abundant resources and minimal competition among inhabitants. e. contain the remains of hard corals and the mineral-hardened cell walls of red algae.
Amniocentesis involves
A) prenatal diagnosis of genetic defects in a fetus. B) tests for enzyme and protein deficiencies in a fetus. C) taking a sample of amniotic fluid with a needle. D) analysis for DNA and chromosome defects in a fetus. E) All of these
The central axis around which the shell of a snail coils is called the
a. Aperture b. Columella c. Sinistral d. Dextral e. Torsion