As you learn to perfect your tennis serve, your brain is comparing the muscle contraction program for the tennis serve with the actual movement as it occurs and making adjustments in the movements. This activity is primarily occurring in your cerebellum.
Answer the following statement true (T) or false (F)
True
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The pectoralis major and minor and subclavius muscles are part of the anterior thoracic region group of muscles.
Answer the following statement true (T) or false (F)
Neostigmine, used to treat myasthenia gravis, blocks the enzyme that degrades ________. This helps treat the disease because ________.
A. nicotine; it destroys the antibodies that block nicotinic ACh receptors on the motor end plate B. acetylcholine; it destroys the antibodies that block nicotinic ACh receptors on the motor end plate C. acetylcholine; it increases the amount of acetylcholine available to bind to receptors on the motor end plate D. norepinephrine; it increases the amount of acetylcholine available to bind to receptors on the motor end plate
In the renal corpuscle, the glomerular epithelium is a layer of specialized cells called:
a) tubular cells b) juxtaglomerular cells c) glomerulocytes d) macula densa cells e) podocytes
What happens immediately after an action potential reaches the presynaptic membrane at a chemical synapse?
A) A calcium influx triggers the release of neurotransmitters. B) Neurotransmitters binds to receptors on the postsynaptic neuron. C) Sodium rushes into the postsynaptic neuron. D) Sodium rushes out of the presynaptic neuron.