WorksheetsAnatomy chpt 12
Total questions: 24
Worksheet time: 20mins
Reorder the following steps in sensory reception sensation begin
A sensation begins when a receptor detects a stimulus
if the stimulus is strong enough, the receptor causes a sensory neuron to send an impulse to the brain and spinal cord
When the impulse arrives at the brain we may experience a sensation such as a sight or sound
Match the following three types of information transmitted by sensory receptors
cold receptors respond only to cold while light receptors respond only to light.
type
uses sensory projection to know in the brain where the stimulus originated (receptive field)
location
the stronger a particular stimulus, the more nerve fibers fire.
intensity
react to various chemicals, including odors and tastes. as well as the concentration of various chemicals in t he body (such as glucose or carbon dioxide)
mechanoreceptors
thermoreceptors
nociceptors
chemoreceptors
receptors are activated by a change in temperature
mechanoreceptors
chemoreceptors
thermoreceptors
nociceptors
These receptors respond to factors that change the position of a receptor, such as pressure, stretch, or vibration.
photoreceptors
chemoreceptors
mechanoreceptors
thermoreceptors
Pain receptors that respond to tissue damage from trauma, heat, chemicals, pressure, or a lack of oxygen
nociceptors
thermoreceptors
mechanoreceptors
chemoreceptors
found only in the eyes, these receptors respond to light
photoreceptors
nociceptors
thermoreceptors
mechanoreceptors
When a stimulus is continuous, the firing frequency of the nerve begins to slow, causing the sensation to diminish
adaptation
intensity
projection
proprioceptor
specialized receptor found in skeletal muscle, joints, and tendons, and provide information about body movement, muscle stretch, and general orientation of the body
proprioceptor
adaptation
mechanoreceptor
nociceptor
General senses are pain, pressure, touch, stretch, and temperature
true
false
Reorder the following steps of the main pain pathway
injured tissues release chemicals that stimulate nociceptors and trigger pain
neurons conduct the pain signals to the spinal cord
spinothalamic tract relays the pain signal to the thalamus then carries it to the brainstem
thalamus relays the signal to the cerebrum and person becomes aware of the pain
impulse travels to the hypothalamus and limbic system, which triggers emotional and behavioral responses
Pain originating in a deep organ may be sensed as if it's originating from the body's surface. sometimes at a totally different part of the body
referred pain
analgesics
thermoreceptors
gustation
The special senses are known as taste, smell, hearing, equilibrium, and vision.
true
false
Match the following four types of papillae
vallate papillae
found at rear of tongue, few in number but contain half of all taste buds
foliate papillae
form ridges at the sides of the tongue
filiform papillae
thread-like papillae contain no taste buds, help distinguish texture of food
fungiform papillae
located at tip and sides of the tongue
gustation
sense of taste, chemicals come in contact with taste buds
Reorder the following steps how smell occurs
incoming odor molecules bind to cilia projecting from the ends of the olfactory receptor cells
This stimulates an impulse along the nerve fibers leaving the nasal cavity through pores in the ethmoid bone
The fibers synapse with other neurons in olfactory bulbs, glomeruli partially process the impulses
The signals continue to the primary olfactory cortex in the brain
Match the following ossicles with their named shape
malleus
hammer
incus
anvil
stapes
stirrup
visible part of the ear, shaped by cartilage. funnels sound into the auditory canal
auricle (pinna)
auditory canal
external acoustic meatus
cerumen
leads through the temporal bone to the eardrum. opening to the outside of the body is called external acoustic meatus
auditory canal
auricle
cerumen
ossicles
secreted from the lining of the canal that mix with dead skin cells to form ear wax. waterproofs the canal and also traps dirt and bacteria.
auricle
external acoustic meatus
cerumen
ossicles
The stapes fits within the oval window of the vestibule which is where the inner ear begins
true
false
AKA Eardrum; this membranous structure separates the outer ear from the middle ear. vibrates freely in response to sound waves
Tympanic membrane
auditory ossicles
external acoustic meatus
pinna
passage way to the nasopharynx. purpose is to equalize pressure on both sides of the tympanic membrane.
auditory or eustachian tube
vestibular nerve
semicircular canals
round window
snail-like structure contains the structures for hearing. where hearing actually occurs
cochlea
marks the entrance to the labyrinths, contains organs necessary for the sense of balance
vestibule
crucial for the maintenance of equilibrium and balance
Semicircle canals
The vestibule and semicircular canals of the inner ear play a key role in the process of balance called
(a)
