The Peripheral Nervous System - Chapter 13 part 2
Mechanoreceptors are activated by
Thermoreceptors are activated by
hot or cold
Photoreceptors are activated by
light on the retina
Chemoreceptors are activated by
Nociceptors are activated by
Meissner's corpuscles are
surrounded by Schwann cells
Merkel discs are located in the
Pacinian corpuscles are located in the
deep dermis and subcutaneous tissue
Ruffini's corpuscles are located in the
dermis and joint capsules
Ganglia associated with afferent fibers are called
sensory neuron cell bodies
Ganglia associated with efferent fibers are called
autonomic motor neurons
The delicate layer of loose connective tissue surrounding each axon is called
Coarse connective tissue which binds groups of fibers into bundles called fascicles is called
The tough fibrous sheath enclosing all fascicles is called
The site of stimulus action is called
What transmits afferent impulses to the CNS?
In simple refex arcs, it can be a single synapse between sensory neuron and a motor neuron or may have multiple synapses with chains of interneurons. What is it?
Conducts efferent impulses from the integration center to an effector organ
Muscle fiber or gland cell that responds to the efferent impulses by contracting or secreting is called what?
Ability to detect that a stimulus has occurred and is the simplest level of perception is called
Ability to detect how much of the stimulus is acting on the body is called
Ability to identify the site or pattern of stimulation is called
Mechanism by which a neuron or circuit is tuned to one feature in preference to others is called
Ability to differentiate the sub-modalities of a particular sensation is called
Ability to take in the scene around us and recognize a familiar pattern, an unfamiliar one, or one that has special significance for us is called
The olfactory nerve controls what?
sense of smell
The optic nerve controls what?
sensory nerve of vision
The oculomotor nerve controls what?
supplies four of the six extrensic eye muscles
The trochlear nerve controls what?
innervates an extrinsic eye muscle that loops through a pulley-shaped ligament in the orbit
The trigeminal nerve controls what?
supplies sensory fibers to the face and motor fibers to the chewing muscles
The abducens nerve controls what?
controls the extrinsic eye muscle that abducts the eyeball
The facial nerve controls what?
innervates muscles of facial expression
The vestibulocochlear nerve controls what?
sensory nerve for hearing and balance
The glossopharyngeal nerve controls what?
innervates the tongue and pharynx
The vagus nerve controls what?
innervates organs in the thorax and abdomen
The accessory nerve controls what?
considered accessory to the vagus nerve. Was formally called the spinal accessory nerve
The hypoglossal nerve controls what?
innervates some tongue-moving muscles
Stretched and excited by external force or by activating motor neurons, causing muscles to contract is called _____ reflexes.
Initiated by a painful stimulus and causes automatic withdrawal of the threatened part is called ____ reflex.
Causes muscle relaxation and lengthening in response to contraction is called ____ reflex.
Golgi tendon reflex
A complex spinal reflex important in maintaining balance is called ____ reflex.
Crossed extensor reflex
Tests the integrity of the spinal cord from L4 to S2; causes a downward flexion of the toes is called ____ reflex.
The triceps brachii muscle is controlled by what nerve?
The biceps brachii muscle is controlled by what nerve?
The flexor carpi ulnaris muscle is controlled by what nerve?
The flexor carpi radialis muscle is controlled by what nerve?
The deltoid muscle is controlled by what nerve?