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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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
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