Nutrients that are necessary for health, but that human cells cannot synthesize, are called ________ nutrients.

Fill in the blank(s) with the appropriate word(s).


essential

Anatomy & Physiology

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The pigment found in vegetables that can make the skin appear orange or yellow is called

A) cadmium. B) carotene. C) hemoglobin. D) keratin. E) melanin.

Anatomy & Physiology

Parasympathetic neurons are:

a. visceral motor b. always excitatory c. always inhibitory d. visceral sensory

Anatomy & Physiology

Which of the following is not a way muscle contractions can be graded?

A) changing the frequency of stimulation B) changing the strength of the stimulus C) changing the type of muscle fibers involved in the contraction D) changing the type of neurotransmitter released by the motor neuron

Anatomy & Physiology

Which of the following cranial nerve mediates the corneal reflex?

A) oculomotor B) trigeminal C) abducens D) trochlear

Anatomy & Physiology