Which curves of the vertebral column are present at birth?
A. Thoracic and sacral
B. Lumbar and cervical
C. Lumbar and sacral
D. Cervical and thoracic
E. Lumbar and thoracic
A
Anatomy & Physiology
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Which is the longest muscle of the body?
A. Sartorius B. Gracilis C. Quadriceps femoris D. Biceps brachii E. Brachioradialis
Anatomy & Physiology
Which of the following are effectors?
A. Receptors B. Stimuli C. Reflexes D. Glands E. Sense organs
Anatomy & Physiology
Chemical messengers released directly into the bloodstream, with the ability to affect cells for hours or days, are called ________.
A. neurotransmitters B. dendrites C. hormones D. sensory cells
Anatomy & Physiology
______ propels sperm through the environment
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology