Histology

Question 1

Brunners Glands

What are they

where are they found

Purpose

Answer 1

• Submucosal glands of duodenum
• Lubricate
• Secrete alkaline mucous to aid in absorption and protect against acidic chyme

Question 2

Lumpy jaw is caused by

Answer 2

Actinomyces israelii

Large slow growing lumps form on jaw and neck

Question 3

2 traits of the actinomyces family

Answer 3

Sulfur granules

fungus like hyphae

Question 4

Granulation tissue composition 6

Answer 4

• Formed during healing of a wound
• Endothelial cells
• Connective tissue
• New collagen
• Tiny vascular components
• Fibroblasts
• Capillary buds

Question 5

Epidermis

Cell type

Layers

Answer 5

• Stratified Squamous epithelium
• Corneum
• Lucidium
• Granulosum
• Sspinosum
• Basale

No capillaries present

Question 6

What are the 3 CT layers tht surround Skeletal Muscle and what do they surround

Answer 6

• Epimysium
  
  • Surrounds the entire muscle
• Perimysium
  
  • Surrounds the muscle fascicles (bundles)
• Endomysium
  
  • Surround individual muscle fibers

Question 7

Tissue of GI tract

Answer 7

Simple Columnar (ciliated)

Question 8

Oral Cavity

Answer 8

Keratinized (around teeth and HP)

Non-keratinized stratified squamous epithelium

Question 9

Respiratory tract

Answer 9

Simple columnar (non-ciliated)

AKA Pseudostratified epithelium

Question 10

Upper resp tract

Answer 10

Ciliated Columnar Epithelium

Question 11

What are Graafian Follicles and their importance

Answer 11

• Graafian follicles (aka ovarian follicles) is where an ovum matures in an ovary
• The ovum will rupture from the follicle on day 14 and ovulation will begin

Question 12

4 types if Inflammatory Exudates

Answer 12

• Purulent or supporative
  
  • Pus forms
• Fibrinous
  
  • Fibrinogen and fibrin present
• Catarrhal
  
  • High mucous content
• Malignant
  
  • Pleural effusion present (fluid build up btw tissues that line the lungs and chest)

Question 13

What 5 proteins make up Fibrous CT

Answer 13

Collagen

Fibronectin

Elastin

Vimentin

Laminin

Question 14

What type of collagen is found in

Hyaline

Elastic

Fibrocartilage

Answer 14

Hyaline type II

Elastic type II

Fibrocartilage type I and II

Question 15

Actin thin filaments composed of 5

Answer 15

G actin

Tropomyosin

trponin

alpha actin Z anchor

Nebulin- stabilizer

Question 16

Thick myosin filaments composed of

Answer 16

Myosin

Titin

Question 17

What 3 hormone regulate osteoclasts

Where are ostoclasts found in the bone

Answer 17

Parathyroid, GF IL6, Calcitonin

Howships lacunae

Question 18

Type I collagen

function

found

Answer 18

Resistance to tension

Skin tendons bone fibrous cartilage

MOST abundant

Question 19

Type II collagen

function

Answer 19

Resistance to intermittent pressure

More flexible

Question 20

Type III collagen

function

forms

found 3

Answer 20

Structural maitenance and elasticity

Forms reticular fibers

Smooth muscle, arteries, uterus

wherever retraction commonly occurs

Question 21

Type VII collagen

function

Answer 21

Forming anchoring fibrils that join epidermal basal lamina to underlying CT

Question 22

Coagulative necrosis

Answer 22

Occurs after ischemic attack

cells that dont have high numbers of lysozymes

Commonly in heart

Question 23

Caseous necrosis

Answer 23

Tuberculosis, fungal, malignancies, granulomas

Question 24

Liquefactive necrosis

Answer 24

Causes supporation (pus)

Due to large amounts of cells dying due to autolysis or hereolysis

Common with pancreas and brain infarcts

Question 25

Intercalated discs contain which 3 adhering junctions

Answer 25

Fascia adhrens (actin anchoring sites)

Macula adherens (desmosomes) anchor intermediate filaments

Gap junctions- permit ion passage for action potential