Exam 2 Flashcards
What part of the eye allows for sight?
Optic Nerve
What does light do in the eye that allows us to see
Refraction
Colored part of the eye
Iris
What does the first number mean on the Snellen Eye Chart
The first 20 in 20/20 vision is the testing distance so in this case is 20 feet.
What does the 2nd number mean on the Snellen Eye Chart?
The 2nd 20 in 20/20 vision relates to normal vision, so a normal person could see these words at 20 feet. If someone’s vision was 20/40, a person would need to come to 20 feet to see something that a normal person could see at 40 feet.
Constriction of the pupil
Miosis
Dilation of the pupil
Mydriasis
“Pink Eye”, inflammation of the membrane that lines the eyeball. Can be Bacterial or Viral. Very contagious.
Conjunctivitis
Treatment for Conjunctivitis
Antibacterial Eyedrops for bacterial infections only. Viral infections will clear up on their own
Blood/Fluid behind the eye. Usually comes with pressure increase because the fluid in the eye cannot be flushed out. Treatment includes corticosteroids.
Hyphema
Bleeding in the outside of the eye due to a blood vessel burst. Usually no treatment is needed and pt can continue with life as normal
Subconjunctival hemorrhage
Laceration of the cornea, incredibly painful as cornea is incredibly dense with nerve endings. Antibacterial eyedrops for treatment. Should clear up in a matter of days.
Corneal Abrasion
Break of the orbital bone, have pt look different directions to determine what muscles are affected as they are usually impacted by fracture.
Orbital Fracture
4th and 40 eye problems
Retinal tear and Proptosis
What does the gastrointestinal system do?
Responsible for consumption, digestion, and elimination
Provide nutrients, water, and electrolytes
Disorders here result in nutritional and metabolic imbalance
Often present as vague and nonspecific
Anatomy of smooth muscle in the gut
Most inner layer - Mucosa
Next layer - Submucosa
Muscle layer - Muscularis propia
Outer layer - Adventitia
Normal Physiology of the Stomach
Gastrin, histamine, and acetylcholine released when food enters system. This activates the proton pump which sends H+ ions into stomach. These combine with chloride ions to make stomach acid (hydrochloric acid)
Food passing what 2 nerves initiates swallowing?
Trigeminal and Hypoglossal
Responsibilities of the liver
Synthesize glucose, albumin, cholesterol
Store glycogen, lipids, micronutrients
Detoxify blood
Produce bile
Convert FA to ketones
What does bile even do?
Emulsify fats and fat-soluble vitamins, extremely acidic, break down food, reabsorbed by the distal ileum
Pancreas
Exocrine - Enzymes, electrolytes, and water
Endocrine - Insulin and Glucagon
Site of most absorption
Duodenum