lab practical 1 a+p 1 - tissue types to study

Loose Areolar Connective Tissue

- collagen fibers, elastic fibers, fibroblast nuclei

• collagen fibers = pink strands

• elastic fibers = black strands

• fibroblast nucleus = black dots

• looks like the tissue samples I used last summer my internship, and my internship was loose + all over areolar the place **

(connective tissue)

Adipose Tissue

• adipocytes (fat cells) = white cells

• nuclei = dark dots

• more white than pink thyroid iodine cuboidal cells

(connective tissue)

Dense Irregular Connective Tissue

- collagen fibers, fibroblast nuclei

• collagen fibers = pink swirls

• fibroblast nuclei = purple dots

• dense irregular = all swirly bc that’s how my insides feel bc mine is irregular

(connective tissue) (thick skin)

Dense Regular Connective Tissue

- collagen fibers, fibroblast nuclei

• collagen fibers = pink waves

• fibroblast nuclei = dark pink big dots

• dense regular looks normal **

(connective tissue) (tendon)

Dense Elastic Connective Tissue

- elastic fibers

• elastic fibers = dark curls/waves/worms

• you need dense elastics to take care of such curly hair **

(connective tissue) (aorta)

Reticular Connective Tissue

- medulla with reticular tissue, cortex
- (capsule, lymphoid follicles, trabecula)

• medulla with reticular tissue = whole lower big chunk

• cortex = top part of tissue (includes capsule, lymphoid follicles, + trabecula)

• reticular is ridiculously complicated **

(connective tissue) (lymph node)

Hyaline Cartilage

- matrix, chondrocytes (cartilage cells)
- (hyaline cartilage, perichondrium, matrix, chondrocytes in lacunae)

• matrix = pink background

• chondrocytes = purple cells with nuclei

• looks like ocean floor if you were high (HYaline)**

(connective tissue) (trachea)

Elastic Cartilage

- matrix, chondrocytes
- (elastic cartilage, perichondrium, matrix, chondrocytes in lacunae)

• matrix = dark purple background

• chondrocytes = white/pink blobs with nuclei

• stretches the mind even further when hy than hyaline —> ocean floor if it were even more crazy when hy**

(connective tissue) (epiglottis)

Fibrocartilage

- matrix, chondrocytes (in lacunae)

• matrix = light purple/white spider webs **

• chondrocytes = dark purple circles with light purple nuclei

• fibrocartilage = discs = plates with spider webs on them = spider webs **

(connective tissue) (pubic symphysis)

Bone

- lacunae, lamella, central canal, canaliculi

• from center —> outside: central canal —> lamella —> canaliculi —> lacunae

• central canal = middle middle

• lamella = wirey into middle

• canaliculi = wirey into sideways

• lacunae = black dots on outside

• CC L C L

• can’t can’t lie, can lie **

(connective tissue) (compact bone)

Non-keratinized Stratified Squamous Epithelium

- epithelium, basement membrane, nuclei

• basement membrane = darker purple, bottom, zig zag

• nuclei = dark purple spiked dots, layer inbetween basement membrane + epithelium

• epithelium pink upper park

• looks like an asian fruit net wrap** non-keratinized because you haven’t eaten the fruit yet **

(epithelial tissue) (vagina)

Keratinized stratified squamous epithelium

- epithelium, nuclei, basement membrane

• basement membrane = light pink seeded area on bottom

• epithelium = dark pink seeded area in middle

• nuclei = seeds in dark pink epithelium

• looks like a dragonfruit! dragonfruit = vitamins = better nutrition = more keratin*

(epithelial tissue)

Simple Squamous Epithelium

- epithelium, nucleus

• epithelium = thin layer right on edge of finger, light pink

• nuclei = black dots (*cancer) along thin epithelial layer

• looks like a witch finger = squamous sounds like those skin cancer cells —> warts —> witch finger **

(epithelial tissue) (venule)

Simple Squamous Epithelium

- simple squamous cells, nuclei

• simple squamous cells = jagged edges like I drew them = squamous squirmy edges *

• nuclei = black dots

• looks like leaf layers/foil **

• jagged edges like I drew them = squamous squirmy edges **

(epithelial tissue) (mesothelium)

Simple Cuboidal Epithelium

- epithelium, nuclei

• simple cuboidal epithelium = pink layer around thyroid iodine reservoirs

• nuclei = dark pink dots in epithelium

• looks like transitioning fish pebbles but pink —> fish —> cuboidal + Ryan —> endo class —> thyroid

(epithelial tissue) (thyroid gland!!!!!!**) (don’t mix up with adipose tissue)

Simple Cuboidal Epithelium

- epithelium, basement membrane, nuclei

• basement membrane = dark purple baseline

• epithelium = white space in little circle cells

• nuclei = black dots of eyeballs

• looks like a bunch of little fish eggs or eyeballs ** my eyes so cube/tbi apparatus is a cube = fish eggs**

(epithelial tissue) (kidney)

Simple Columnar Epithelium

- epithelium, basement membrane, nuclei

• basement membrane = white little underpart inside the middle that the columns start from

• epithelium cells = tall light purple outward strands

• nuclei = dark purple dots

• looks like a kiwi!!!** - kiwis irritate the column of my throat with allergic itchiness **

(epithelial tissue) (small intestine, duodenum)

Simple Columnar Epithelium

- basement membrane, epithelium, nuclei, goblet cells, microvilli

• basement membrane = separating layer between kitchen-sink brownie underneath + tall columns above

• epithelium = tall cells

• nuclei = dark purple/pink circles

• goblet cell = random white pocket circles = synthesize and secrete gel-forming mucins to protect from pathogens/irritants

• microvilli = outside layer

• kiwi one on its side*

(epithelial tissue) (small intestine)

Pseudostratified Columnar Epithelium

- epithelium

• epithelium = outmost layer of snake

• looks like a movie monster snake passing by ** —> but it’s actually a cell so it’s a pseudosnake, not real

(epithelial tissue) (trachea) (far away picture)

Pseudostratified Columnar Epithelium

- basement membrane, epithelium, nuclei, goblet cells, cilia

• basement membrane = bottom of top little inch of tissue

• epithelium = columns (look like pomelo strands **)

• nuclei = dark purple dots

• goblet cells = white circles randomly placed

• cilia = outside layer

• looks like an ant hill’s insides underneath ** —> ants make columns in the ground ** —> but this isn’t ants so it’s pseudostrantified

(epithelial tissue) (trachea) (closer picture)

Pseudostratified Columnar Epithelium

- basement membrane, epithelium, nuclei, goblet cells, cilia

• basement membrane = bottom of top little inch of tissue

• epithelium = columns (look like pomelo strands **)**

• nuclei = dark purple dots

• goblet cells = white circles randomly placed, shiny

• cilia = outside layer, pink little hairy guys

(epithelial tissue) (trachea) (even closer picture)

Transitional epithelium

- basement membrane, epithelium, nuclei, umbrella cells

• basement membrane = pink meaty tissue at bottom

• epithelium = actual cell shapes

• nuclei = dark purple dots in cells

• umbrella cells = white cells at edges

(epithelial tissue) (urinary bladder)

perichondrium

a dense, fibrous membrane that covers the external surface of most cartilage in the body

goblet cells

• in columnar tissue

• specialized, cup-shaped epithelial cells found in the respiratory, gastrointestinal, and reproductive tracts

• primary function is to synthesize and secrete gel-forming mucins, which combine with water to form a protective mucus layer that lubricates tissues and traps pathogens or irritants.

• lubricates tissues and traps pathogens or irritants

umbrella cells

• in transitional tissue

• highly specialized, terminally differentiated cells that form the outermost layer of the urinary tract's lining

• get your umbrella out to protect from all your pee**