Exam (elaborations)
Bio 201: Chapter 13-The Peripheral Nervous System and Reflex Activity 2024. Already Graded A+.
- Course
- Institution
Bio 201: Chapter 13-The Peripheral Nervous System and Reflex Activity 2024. Already Graded A+.
[Show more]
Seller
Follow
wilfredmburuUS
Content preview
Bio 201: Chapter 13-The PeripheralNervous System and Reflex Activity
2024. Already Graded A+.
abdominal reflexes - ANS-tests the spinal cord integrity from T8-T12
autonomic (visceral) - ANS-activate effectors (smooth or cardiac muscles or glands)
axillary nerve - ANS-innervates the deltoid and teres minor muscle and the skin and
joint capsule of the shoulder
BRACHIAL PLEXUS - ANS-gives rise to all nerves that innervate the upper limbs
-ventral rami of C5-C8 and most of the T1 ramus
cervical plexus - ANS-formed by the ventral rami of C1-C4
common fibular nerve - ANS-wraps the head of the fibula
-innervated the knee joint, skin of the lateral calf & dorsum of the foot
cranial nerves - ANSI. olfactory: smell
II. optic: vision
III. oculomotor: eye movement
IV. trochlear: "pulley" for the eye
V. trigeminal: facial and chewing muscles
VI. abducens: abducts the eye
VII. facial: facial expression
VIII. vestibulocochlear: hearing & balance
IX. glossopharyngeal: toungue and pharynx
X. vagus: head, neck, thorax & abdomen
XI. accessory: accessory to the vagus nerve
XII. hypoglossal: tongue movement
crossed-extensor reflex - ANS-accompanies the flexor reflex in weight-bearing limbs
-important in maintaining balance
dermatomes - ANS-the area of skin innervated by the cutaneous branches of a single
spinal nerve
dorsal roots - ANS-contain sensory (afferent) fibers that arise from sensory neurons i
the dorsal root ganglia and conduct impulses from peripheral receptors to the spinal
cord
encapsulated dendritic endings - ANS-all mechanoreceptors
-enclosed in a connective tissue capsule
, femoral nrve - ANS-the largest, terminal nerve of this plexus
-innervates anterior thigh muscles
flexor/withdrawal reflex - ANS-initiated by a painful stimulus an causes automatic
withdrawal of the threatened body part from the stimulus
free or naked nerve endings - ANS-present everywhere in the body
-abundant in the epithelia and connective tissues
ganglia - ANS-collections of neuron cell bodies associated with nerves in the PNS
general sensory receptors - ANS- involved in tactile sensations
-proprioceptors
-either unencapsulated or encapsulated nerve endings
Golgi tendon organs - ANS-proprioceptors
-cause contracting muscles to relax
-encapsulated
golgi tendon reflexes - ANS- produce muscle relaxation and lengthening in response to
tension
hair follicle receptors - ANS-free nerve endings that wrap around hair follicles
-light touch receptors that detect the bending of hairs
Hilton's Law - ANS-any nerve serving a muscle that produces movement at a joint also
innervates the joint and the skin over that joint
intercostal nerves - ANS-the ventral rami of T1-T12
-supply the intercostal muscles lying between the ribs
Joint kinesthetic receptors - ANS-proprioceptors
-monitor stretch in the articular capsules that enclose synovial joints
-encapsulated
LUMBAR PLEXUS - ANS- arises from spinal nerves L1-L4
median nerve - ANS-innervates five intrinsic muscles of the lateral palm
Meissner's corpuscles or tactile corpuscles - ANS-found just beneath the epidermis
-numerous in hairless skin areas
-receptors for discriminative touch
-encapsulated
Merkel discs - ANS-lie deeper within the layers of the epithelium
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller wilfredmburuUS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75619 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now