The protein that contributes to many of the skin's protective qualities is called
A) melanin.
B) keratin.
C) carotene.
D) dermicidin.
E) calcitriol.
B) keratin.
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The layer of pleura in direct contact with the lungs is the visceral layer.
Answer the following statement true (T) or false (F)
This figure shows the right anterior forearm. What muscle does number 3 indicate?
A. Flexor carpi radialis B. Brachialis C. Pronator teres D. Brachioradialis E. Palmaris longus
Which of the following is the connection point between the axial skeleton and appendicular skeleton?
A) pelvis - femur B) vertebra - sacrum C) vertebra - scapula D) sternum - clavicle E) vertebra - skull
An organelle is
A. a small structure within a cell. B. a structure composed of several tissue types. C. the basic structural unit of all living organisms. D. a group of organs with a common set of functions. E. a group of cells with similar structure and function.