What ion is sometimes used as a second messenger of amino acid-based hormones?

A) sodium
B) calcium
C) iron
D) chlorine


B

Anatomy & Physiology

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Which of the following is true regarding the autonomic nervous system?

A. It has no ganglia along its nerves. B. It usually controls conscious actions. C. It uses the neurotransmitter acetylcholine exclusively. D. Its denervation would cause hypersensitivity. E. It controls skeletal muscle contraction.

Anatomy & Physiology

Sperm use ________ for movement.

A. microvilli B. cilia C. flagella D. microfilaments

Anatomy & Physiology

What type of tissue is especially dependent on adequate plasma glucose levels?

A. Cardiac muscle B. Liver C. Nervous D. Skeletal muscle

Anatomy & Physiology

Which organelle is visible under light microscope?

A) ribosome B) Golgi apparatus C) nucleus D) mitochondrion E) lysosome

Anatomy & Physiology