WorksheetsCh 14 part 3 Spinal nerves Reflex types and disorders
Total questions: 31
Worksheet time: 16mins
reflexes you are born with…blinking, suckling.
Innate reflexes
Acquired reflexes
Spinal reflex arc
Cranial reflex arc
blinking, suckling is an example of what reflex arc
Innate reflexes
Acquired reflexes
Spinal reflex arc
Cranial reflex arc
reflexes you learn…bicycling, swimming, jumping ropes.
Innate reflexes
Acquired reflexes
Spinal reflex arc
Cranial reflex arc
bicycling, swimming, jumping ropes are examples of what type of reflex arc
Innate reflexes
Acquired reflexes
Spinal reflex arc
Cranial reflex arc
involves spinal cord as the integration center…simpler
Innate reflexes
Acquired reflexes
Spinal reflex arc
Cranial reflex arc
involves brain as the integration center…more complex.
Innate reflexes
Acquired reflexes
Spinal reflex arc
Cranial reflex arc
does not involve interneuron…one synapse…
sensory -->motor.
Monosynaptic reflex arc
Polysnaptic reflex arc
Somatic reflex arc
Autonomic/Visceral reflex arc
has one or more interneurons…2 or more synapses.
Monosynaptic reflex arc
Polysnaptic reflex arc
Somatic reflex arc
Autonomic/Visceral reflex arc
results in contraction of skeletal muscle…voluntary effector.
Monosynaptic reflex arc
Polysnaptic reflex arc
Somatic reflex arc
Autonomic/Visceral reflex arc
results in contraction of smooth/cardiac muscle or secretion of a gland…involuntary effectors.
Monosynaptic reflex arc
Polysnaptic reflex arc
Somatic reflex arc
Autonomic/Visceral reflex arc
sensory and motor impulses remain on the same of the body.
Ipsilateral reflex arc
Contralateral reflex arc
Intersegmental reflex arc
sensory impulses enter on one side --> interneuron crosses over through gray commissure --> motor impulses exit from opposite side.
Ipsilateral reflex arc
Contralateral reflex arc
Intersegmental reflex arc
sensory neurons enter at certain level/segment of the spinal cord -->interneurons take to another level/segment--> motor neurons exit at different level.
Ipsilateral reflex arc
Contralateral reflex arc
Intersegmental reflex arc
In the Patellar reflex what muscle contracts
Quadriceps femoris
Gastrocnemius
In the Achilles reflex what muscle contracts
Quadriceps femoris
Gastrocnemius
damage to the spinal cord --> loss of muscle control --> paralysis.
spinal cord trauma
Neuritis
Sciatica
shingles
inflammation of the nerves.
Due to injuries, bone fracture, drugs, etc. Painful and affects muscle contraction.
spinal cord trauma
Neuritis
Sciatica
shingles
type of neuritis.
Compression of sciatic nerve against coxal bone or hip injury à injury to sciatic nerve à numbness of the lower extremity or severe pain radiating from the lower back to the leg.
spinal cord trauma
Neuritis
Sciatica
shingles
where chicken pox virus, hiding in the peripheral nerves --> becomes re-activated when immune system in compromised --> starts multiplying --> spreads along the peripheral nerve à form painful blisters along the nerve pathway.
spinal cord trauma
Neuritis
Sciatica
shingles
where both the lower extremities are paralyzed.
Paraplegia
Quadriplegia
Poliomyelitis
Rabies
where all four limbs are paralyzed.
Paraplegia
Quadriplegia
Poliomyelitis
Rabies
caused by poliovirus --> attacks somatic motor neurons
-->paralysis of a
Paraplegia
Quadriplegia
Poliomyelitis
Rabies
virus infection transmitted by animal bites (dogs, bats) --> infection spreads through the nerves --> to CNS --> seizures, coma, death.
Paraplegia
Quadriplegia
Poliomyelitis
Rabies
The inferior tip of the spinal cord is the ___________ part.
lumbar
coccygeal
cervical
sacral
The subdural space is the region between the arachnoid mater and the dura mater.
True
False
These nuclei are located in the lateral horns and innervate smooth muscle, cardiac muscle, and glands.
Sensory nuclei
Autonomic motor nuclei
Visceral sensory nuclei
Somatic sensory nuclei
Somatic motor nuclei
Motor pathways are also called ascending pathways.
True
False
The cell bodies of sensory neurons are located in the
posterior root ganglion.
anterior funiculus.
gray commissure.
anterior horn.
The nerves projecting inferiorly from the spinal cord are collectively called the
terminal finale.
cauda equina.
terminus filus.
caudal terminale.
caudus finalis.
What is the correct order for the events that occur during a reflex?
a: Impulse travels through sensory neuron to the CNS
b: A stimulus activates a receptor
c: Information is processed by interneurons
d: Motor neuron transmits impulse to effector
e: Effector responds
a, b, c, d, e
b, a, c, d, e
c, b, a, e, d
c, a, b, d, e
b, d, c, a, e
A monosynaptic response is one that does not involve an interneuron.
True
False
