last quiz (matching)

X- vagus nerves

Only cranial nerve that extends beyond the head and neck regions. Its nearly all motor fibers are parasympathetic and supply heart, lungs, and abdominal viscera.

Chemoreceptors

Responds to chemicals dissolved in a solution

Parasympathetic

Rest and digest division of the ANS

Referred pain

Is a sensation felt on part of the body other than its actual source

VII cranial nerves

mixed nerves that are the chief motor nerves of the face

Corpus callosum

Is composed of commissural fibers that connect right with left hemispheres

Vestibulocochlear

VIII Cranial Nerve. Sensory nerve involved in hearing and balance

Vestibular division

It’s fibers arise from the equilibrium apparatus in semicircular canals and vestibule

Adrenal Glands

Contained specialized ganglionic sympathetic neutrons that release hormones (epinephrine and norepinephrine) into bloodstream

Nociceptors

Detect stimuli associated with pain

Trigeminal nerves

It’s fibers extended from the pons to the face and form the ophthalmic, maxillary, and mandibular divisions

Oculomotor

Supplies four of the six extrinsic muscles that move the eye ball in the orbit

II Cranial Nerve

Also called optic nerve, it is really a brain tract developed as an outgrowth of the brain

Acetylcholine

Neurotransmitter released by all parasympathetic neurons

I Cranial nerve

Nerves (filaments) which run from the nasal mucosa carrying sensory information of smell

Proprioceptors

Monitor position of joints

Association fibers, commissural fibers, and projection fibers

Names given to axons in the white matter of the cerebral hemispheres

Hypothalamus

Contain the integrative centers for autonomic activity

Cochlear division

Formed from afferent fibers from hearing receptors and transmits impulses for sense of hearing

Baroreceptors

Are mechanoreceptors with the function is of sending pressure changes by responding to change in the tension of the arterial wall

Association fibers

connect areas in same cerebral hemisphere

Anterior commissure

becomes more important if corpus callosum injured

Projection fibers

link cerebral cortex to diencephalon, brainstem, cerebellum, and spinal cord

Sensation

information carried by a sensory pathway

Perception

conscious awareness of a sensation

Receptive Field

area monitored by single receptor cell

Free nerve endings

Tips of branching dendrites of sensory neurons

Thermoreceptors

temperature receptors

Three types of mechanoreceptors

1. Proprioceptors
2. Baroreceptors
3. Tactile receptors

Mechanoreceptors

respond to physical

Tactile Receptors

provide sensations of touch (shape/texture), pressure, and vibration

Corticospinal pathway

Voluntary control of skeletal muscles

Levels of somatic motor control (least to most
complex)

1. Brainstem/spinal cord
2. Pons/medulla oblongata
3. Hypothalamus
4. Thalamus/midbrain
5. Basal nuclei
6. Cerebellum
7. Cerebral cortex