lab 3

Question 1

PRIMARILY REVIEW GOOGLE DOC, BUT LOOK HERE FOR LOCATIONS

Answer 1

:)

Question 2

simple squamous epithelium (WTLF, F, L)

Answer 2

thins cells, light passing through, sort of spread out, tile like

allows diffusion and filtration, secretes serous fluid in serous membranes

blood vessels, alveoli, serous membranes

Question 3

simple cuboidal

Answer 3

single layer, look for a bunch of nuclei with some of them forming circles or ovals

secretes hormones, absorb water + other solutes

kidney lining, thyroid gland

Question 4

simple columnar

Answer 4

look for somewhat uniform nuclei with some folds, goblet cells, maybe microvilli

can be ciliated or non

ciliated - protection from fluid loss, moves mucus
non - secretes mucus, absorb nutrients

ciliated - bronchioles / oviducts
non - gastrointestinal cells with microvilli

Question 5

pseudostratified columnar

Answer 5

similar to stratified columnar but with more nuclei and theyre less organized. sort of a mess, with goblets

ciliated - protect from invasion in respiratory tract
non - absorption / secretion male urethra

ciliated - upper respiratory tract
non - urethra (male)

Question 6

stratified squamous

Answer 6

racks on rack of flat cells

keratinized - skin
non - vagina / cheek

keratinized - strength, protec from abrasion, fluid loss, UV
non - abrasion

Question 7

urothelium

Answer 7

less see through than simple squamous but similar. can see “shadows” of cells behind

lines hollow organs like urinary bladder

prevents leakage, abrasion from high pressure fluids

Question 8

pancreas

Answer 8

buncha larger lobes with lighter pink parts (islets)

behind the stomach

endocrine - secreted hormones that regulate blood sugar and glandular secretion
exocrine - release enzymes to break down food

Question 9

salivary gland

Answer 9

pizza like things (acini), will be a mix of mucus acini (lighter colour) and serous acini (darker), pizza things wont always be round, but look for those clusters

around the oral cavity

secrete saliva into the mouth (exocrine)

Question 10

sebaceous gland

Answer 10

look for long big portion (hair follicle) with glands connected to it

in the pores of skin with the hairs

produced and secretes sebum

Question 11

sudoriferous gland

Answer 11

donut like calimari cells

in the dermis

produce and secrete sweat

Question 12

collagen fibres

Answer 12

often in bundles, strong but not stiff, found in bone, cartilage, tendons and ligaments

Question 13

elastic fibres

Answer 13

strong, can be stretched 150x without breaking, found in skin, blood vessels, and lungs

Question 14

reticular fibres

Answer 14

from a branching network, provide support and strength, form framework for spleen and lymph nodes, and basement membranes

Question 15

areolar CT

Answer 15

stringyy with dots

has all fibres

widely distributed in body

support, reinforce, provide stretch. serves as packing material for body cavities

Question 16

adipose CT

Answer 16

white bubbles

around the heart and other organs

insulates body and stores energy in the form of triglycerides, supports and protects organs

Question 17

reticular CT

Answer 17

dark borders around cells, resembles maze

spleen and lymph nodes

filters substances like lymph

Question 18

dense regular CT

Answer 18

array of lines going in the same direction

part of tendons and ligaments

have great strength

Question 19

hyaline cartilage

Answer 19

look for hoove print like structures

most common cartilage, found between bones and joints

provides a smooth surface between bones and joints, comprises fetal skeleton before ossifiaction

Question 20

bone

Answer 20

looks like the maze from the maze runner

comprises skeleton

provides supports, structure, and protection for the body

Question 21

blood smear

Answer 21

purple looking cells (leukocytes) and many faint red/pink cells (RBCs)

in blood vessels

transport o2, gases, water, cells, hormones, platelets

Question 22

skeletal muscle

Answer 22

resembles spagetti with lots of stripes, nuclei between some of the cells

attaches to bone via tendons

produced voluntary movement, generates heat

Question 23

cardiac muscle

Answer 23

looks like a badly done hardwood floor, lots of intercalated discs

forms myocardium

involuntary movement

Question 24

smooth muscle

Answer 24

looks like a buncha skinny worms

found in urinary bladder, airways, and small intestine

facilitates paristalsis, and constriction of airways