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You have been cooking on a stove for the last several hours. After turning off the burner, you accidentally place your hand on top of that burner as you reach for something else. What receptors will sense that hot, painful stimulus?
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The middle ear cavity is an air-filled chamber in which of the following bones of the skull?
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You have been cooking on a stove for the last several hours. After turning off the burner, you accidentally place your hand on top of that burner as you reach for something else. What receptors will sense that hot, painful stimulus? free nerve endings
The middle ear cavity is an air-filled chamber in which of the following bones of the skull? temporal
Which of the following is not an extrinsic muscle of the eyeball? pupillary dialator muscle
The posterior chamber of the eyeball is found in between the lens and the ____? iris
The visual pigment of the rods is called rhodopsin. It consists of a protein called opsin and vitamin ____ derivatieve called retinal. A
Afferent impulses reach the somesthetic cortex from the thalamus via the ____? third-order neurons
A person experiencing pain around the shoulders or neck may actually be having problems with their lungs or diaphragm. This "misplacement" of the pain by the conscious mind is called _____? referred pain
Pain signals may be blocked by special neurotransmitters in the brain itself. An example of such a chemical produced during exercise is ______? endorphin
What is the most correct order of sound transmission? 1 - tympanum 2 - ossicles 3 - scala vestibuli 4 - basilar membrane
The loudness of a sound is correlated with the ____ of the sound wave. amplitude
The semicircular ducts lie within ______? the semicircular canals
Hair cells of the cochlea are stimulated as a result of the up-and-down vibrations of ____? the basiliar membrane
Which of the following is part of the fibrous tunic of the eye? the sclera
The blind spot in each visual field is a region in which _____? the optic nerve leaves the eye
The footplate of the stapes covers an opening called ____? the oval window
____ is released by pain receptors and stimulates spinal interneurons. Substance P
What are tears produced by? the lacrimal glands
The consensual light reflex refers to the fact that ____? both pupils react even if only one eye is stimulated
Most somesthetic signals below the head are carried by way of three neurons called the first-, second-, and third-order neurons. Generally, second-order neurons end in the _____. thalamus
proprioceptive signals are an exception with their second-order neurons ending in the _____. cerebellum
In the inner ear, the transducer that converts vibrations caused by sound to nerve impulses in the _____? organ of corti
In looking at ta near object, the cilliary muscles will ____, the suspensory ligaments ______, and the lens ______. contract loosen thickens
This cranial nerve is the only cranial nerve to innervate structures in the thorax and abdomen... vagus
the splanchnic nerves do not synapse in the sympathetic chain ganglia. True or False true
The parasympathetic nervous system is associated with which activity? urination
T or F...The adrenal gland is a modified postganglionic sympathetic ganglion true
Parasympathetic fibers leave the brainstem as part of which four cranial nerves? 3, 7, 9, 10
What is an example of a sympathetic effect? ciliary muscle relaxation for far vision
Most of the viscera recieve innervation from either the sympathetic or parasympathetic system, but not from both...T or F False
Blood vessels are in a state of partial contraction called vasomoter tone that is determined by the firing frequency of the sympathetic nervous system. T or F True
Which of the following is a characteristic of the autonomic nervous system? controls smooth and cardiac muscles.
The communicating rami are ____ fibers? efferent
They sympathetic division of the nervous system is also known as the ____ because _____. Thoracolumbar division; its preganglionic neuron cell bodies are located in the thoracic and lumbar regions of the spinal cord
Postganglionic neuron cell bodies of the parasympathetic nervous system are located where? in ganglia near the target organ
This allows a preganglionic sympathetic neuron to excite about 17 sympathetic postganglionic neurons. neuronal divergence
Afferent fibers carry messages to the muscles. T or F false
The signals that control your handwriting travel down the spinal cord in _____. the corticospinal tracts
The cervical plexux gives rise to all the following nerves except the _____ nerve. radial
The epidural space in the spinal column is occupied by _____ tissue? adipose
The neurilemma is coverd by the loose connective tissue called the ______. endoneurium
Which of the following sensory functions involves neurons in the dorsal root ganglia? touch
The ventral rami of the spinal nerves form nerve plexuses in all regions except the ____ region? thoracic
a ganglion is to the PNS as a _____ is to the CNS. nucleus
_____ nerve fibers are those that innervate the skin and skeletal muscles. Somatic
The quickest reflex arcs involve only two neurons and are thus _____ monosynaptic
Nerve fibers that stimulate the skeletal muscles of your foot have their somas in the _____ horn of the _____. ventral; spinal cord
Your hear a loud noise and instinctively react to it. What motor tract carried the signals? tectospinal
Sensory impulses from the genital region are transmitted to the CNS by way of the ______ nerve. saphenous
In addition to the dorsal and ventral rami, each spinal nerve gives rise to a ______ branch. meningeal
Walking is controlled by a group of neurons in the spinal cord called ____ pattern _____ central; generators
The spinal cord ends at about which vertebra? L1
Nerves to the pelvic region and lower limbs arise from an area of the spinal cord called the _____ enlargement lumbar
Anisthetics and anti-inflammatory drugs are introduced into this space in the spinal cord. epidural
The innermost meninx around the spinal cord is called the _____ and extends beyond the medullary cone as the _____ pia mater; terminal filum
Your spinal cord was unable to form any denticulate ligaments. Your spinal cord would most likely lose _____ to _____ stability side to side
Second-order neurons synapse with neurons in the ______ thalamus
An action potential carried in one nerve fiber cannot stimulate adjacent nerve fibers carried in the same nerve because of the ______ endoneurium
The ventral root carries ____ neurons, while the dorsal root carries ____ neurons motor; sensory
This plexus is formed by the ventral rami of nerves C4 - T2. It innervates the upper limb and some muscles of the neck and shoulders brachial
What best describes the order of somatic reflex 1 - somatic receptor 2 - afferent nerve fiber 3 - intermeuron 4 - eferent nerve fiber 5 - skeletal muscle
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