Which of the following represents a class I lever system?
A. crossing your legs
B. hyperextension of the head
C. standing on your tiptoes
D. flexion of the elbow to elevate the hand
E. lifting weight with your arm
B
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Which carries oxygenated blood from the lungs to the heart?
A. Pulmonary trunk B. Superior vena cava C. Inferior vena cava D. Pulmonary veins E. Pulmonary arteries
Belching is another term for ________________________________________
Fill in the blank(s) with correct word
The spooling of DNA around histones creates particles called ________.
A. nucleosomes B. nucleoli C. euchromatin D. proteosomes
Why would an elderly person be more prone to skin infections than a younger person?
A) Skin repairs take longer in the elderly. B) The epidermis is thinner in the elderly. C) There are fewer dendritic cells in the skin of the elderly. D) Basal cell activity is reduced in the elderly. E) All of the answers are correct.