Outline the steps to a simple stretch reflex
What will be an ideal response?
The steps of a simple stretch reflex are as follows: 1 ) The simple stretch reflex is initiated when an external force stretches the muscle. 2 ) Muscle spindles detect the stretch, and primary and secondary afferents transmit an action potential to the spinal cord. 3 ) In the spinal cord, the sensory afferents synapse on an alpha motor neuron and trigger an action potential. 4 ) The alpha motor neuron stimulates the muscle to shorten, and it returns to its optimal length.
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The residual volume is the volume of air:
which remains in lungs after maximal expiration inspired and expired during one breath at the end of normal respiration if expiratory muscles are actively contracted which can be inspired over and above resting tidal volume none of the choices are correct
The respiratory centers of the brainstem lie within the:
A) basal ganglia. B) pons and medulla. C) diencephalon. D) midbrain.
Of the 20 amino acids, ________ are essential amino acids that the body either cannot synthesize or that cannot be produced in amounts sufficient for growing children
A) 2 B) 6 C) 8 D) 10 E) 20
How does the structure of a lymph node allow lymphocytes and macrophages to perform their protective function?
What will be an ideal response