Once a signal molecule has left the neuron and binds to a receptor molecule on the surface of the muscle fiber, a sodium channel opens, allowing more sodium entry into the muscle fiber and the creation of an action potential. Which substance is then released from the sarcoplasmic reticulum?
A) calcium
B) acetylcholine
C) sodium
D) sodium and potassium
Answer: A) calcium
Anatomy & Physiology
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The common name for the MP joints is "knuckles."
Answer the following statement true (T) or false (F)
Anatomy & Physiology
Embryonic connective tissue is called _____
What will be an ideal response?
Anatomy & Physiology
Elbow extension takes place in what plane?
A. sagittal B. frontal C. transverse D. longitudinal
Anatomy & Physiology
Second-order neurons synapse with third-order neurons in the ________.
A. thalamus B. medulla oblongata C. cerebral cortex D. dorsal root ganglion E. spinal cord
Anatomy & Physiology