100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
NU 545 Unit 2 Exam Questions and Answers All Correct $12.99   Add to cart

Exam (elaborations)

NU 545 Unit 2 Exam Questions and Answers All Correct

 5 views  0 purchase
  • Course
  • NU 545
  • Institution
  • NU 545

NU 545 Unit 2 Exam Questions and Answers All Correct What are the two types of fibers that transmit the nerve action potentials generated by excitation of any of the nociceptors. Pages 469-470 - Answer- Nociceptors = free nerve endings in the peripheral nervous system that responds to chemical,...

[Show more]

Preview 2 out of 7  pages

  • September 25, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NU 545
  • NU 545
avatar-seller
Scholarsstudyguide
NU 545 Unit 2 Exam Questions and
Answers All Correct
What are the two types of fibers that transmit the nerve action potentials generated by
excitation of any of the nociceptors. Pages 469-470 - Answer- Nociceptors = free nerve
endings in the peripheral nervous system that responds to chemical, mechanical, and
thermal stimuli; when stimulated they cause nociceptive pain. Two fibers are A-delta &
C fibers ***see question 7!
A-delta fibers: lightly myelinated, medium sized = faster transmission
C Fibers: unmyelinated, smaller sized = slower transmission

What is the relationship between epinephrine and body temperature? - Answer-
Epinephrine = body heat via chemical (nonshivering) thermogenesis
causes vasoconstriction, stimulates glycolysis, and increases metabolic rate

Mechanisms of heat production and heat loss - Answer- In human, body temperature is
maintained around 37C (98.6F) and rarely exceeds 41C. The normal range is 36.2C to
37.7C.
Temperature regulation (thermoregulation) is mediated by the hypothalamus; peripheral
thermoreceptors in the skin and abdominal organs (unmyelinated C fibers and thinly
myelinated A-delta fibers) and central thermoreceptors in the spinal cord and trigeminal
ganglia provide the hypothalamus with information about skin and core temperatures

insensible water loss - Answer- 600 mL a day

Acute bacterial conjunctivitis ("pinkeye") - Answer- highly contagious; often caused by
gram-positive bacteria (Staphylococcus, Haemophilus, Proteus); children ages 6 and
under à Haemophilus may lead to otitis media
a. onset is acute; disease is often self-limiting, resolving spontaneously in 10-14 day
b. S/S: mucopurulent drainage from one or both eyes
c. Tx: preventing spread of organism with handwashing and use of separate towels;

Viral conjunctivitis - Answer- contagious; caused by an adenovirus (some strains of
virus cause conjunctivitis and pharyngitis, and others cause keratoconjunctivitis)
a. S/S: watering, redness, and photophobia
b. Tx: symptomatic

Allergic conjunctivitis - Answer- associated with a variety of antigens (pollens)
a. S/S: Ocular itching, photophobia, burning/gritty feel in eye
b. Tx: antihistamines, low-dose corticosteroids, mast cell stabilizers, and
vasoconstrictors.

, Chronic conjunctivitis - Answer- result of any persistent conjunctivitis, and cause
requires identification for effective treatment.

Trachoma (chlamydial conjunctivitis) - Answer- caused by Chlamydia trachomatis, often
associated with poor hygiene and is the leading cause of preventable blindness in the
world
a. S/S: inflammation with scarring of the conjunctiva and eyelids à distorted lashes to
abrade the cornea à corneal scarring and blindness
b. Tx: surgery for in-turned lashes, systemic or local antibiotics, facial cleanliness, and
environmental improvement (WHO "SAFE" strategy for treatment)

Keratitis - Answer- inflammation of the cornea that can be noninfectious or caused by
bacteria, viruses, or fungi:
Bacterial infections à corneal ulceration; require intensive antibiotic treatment
(Staphylococcus aureus is the most common bacterial infection)
b. Virus (Type 1 herpes simplex) can involve the cornea and conjunctiva
c. Causes: contact use, trauma, and penetrating keratoplasty (corneal grafting)

which part of the brain controls pupillary changes. Pg. 508 - Answer- "Brainstem areas
that control arousal are adjacent to the areas that control the pupils. Eval of pupils can
give insight to brainstem dysfunction." (fig 17.2)

Characteristics of Alzheimer's disease - Answer- Progresses from mild short-term
memory deficits to total loss of cognition and executive functions. Can be misdiagnosed
easily in the early stage as forgetfulness or from an emotional cause
· Memory loss increases as progresses. Judgement and problem solving deteriorate
along with loss of mathematic calculation ability, language, and visuospatial orientation.
Mood changes common.
· Diagnosis by elimination, only made definitive in autopsy.
Review the anatomy of the brain. Which portion is responsible for keeping you awake,
controlling thought, speech, emotions and behavior, maintaining balance and posture? -
Answer- Broca Area in the inferior frontal lobe (Brodmann areas 44, 45) is an important
center for speech and language processing. This area, rostral to the inferior edge of the
premotor area (Brodmann area 6) o the inferior frontal gyrus, is usually most important
in the left hemisphere. Injury to this area results in difficulty forming or inability to for
words (expressive aphasia or dysphasia).

Know the function of the arachnoid villi. - Answer- The arachnoid villi protrude from the
arachnoid space, through the dura mater, and lie within the blood flow of the venous
sinuses. The villi function as one-way valves directing CSF outflow into the blood but
preventing blood flow into the subarachnoid space. Thus CSF is formed from the blood
and, after circulating throughout the CNS, it returns to the blood.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 Scholarsstudyguide. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79079 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.99
  • (0)
  Add to cart