What is a reflex arc? What components must be present to qualify?
A reflex arc is the wiring pattern of neurons that underlie a particular reflex. A reflex arc consists of three elements at the minimum: (1 ) a sensory receptor and neuron to carry afferent information to the CNS; (2 ) an excitatory synapse on a motor neuron; (3 ) the motor neuron to generate an action potential and conduct the impulse to an effector such as a skeletal muscle motor unit.
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Because all action potentials are alike, how does the brain separate situations that require immediate attention from ordinary "positional" reports?
What will be an ideal response?
List the three structural classes of carbohydrates, and give an example of each
A) monosaccharides (glucose), disaccharides (sucrose), and polysaccharides (starch) B) monosaccharides (sucrose), disaccharides (starch), and polysaccharides (glucose) C) monosaccharides (glucose), disaccharides (starch), and polysaccharides (sucrose) D) monosaccharides (sucrose), disaccharides (glucose), and polysaccharides (starch) E) monosaccharides (starch), disaccharides (glucose), and polysaccharides (sucrose)
All of these muscles, except one, have their proximal attachment on the scapula. Select the exception.
A. Subscapularis B. Infraspinatus C. Pectoralis major D. Triceps brachii E. Coracobrachialis
Underlying the enamel of a tooth is a connective tissue called ________ that contains odontoblasts.
Fill in the blank(s) with the appropriate word(s).