The contraction phase of a muscle twitch has a shorter duration than the relaxation phase
Indicate whether this statement is true or false.
TRUE
Anatomy & Physiology
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Peptides and catecholamines are hydrophilic and cannot penetrate a target cell. they therefore bind to receptors where?
a) on the DNA b) on the cytoskeleton c) in the nucleus d) on the cell surface
Anatomy & Physiology
The liver stores vitamins A, B12, K, and C.
Answer the following statement true (T) or false (F)
Anatomy & Physiology
The motor end plate
a. contains receptor sites that are capable of binding curare. b. contains acetylcholinesterase. c. experiences an increase in permeability to cations when combined with acetylcholine. d. both (b) and (c) above. e. all of these answers.
Anatomy & Physiology
Chemicals that become ionic conductors when dissolved in water are called:
A. ions. B. exocytes. C. endocytes. D. electrolytes.
Anatomy & Physiology