lab: histology

Question 1

Every time you have muscle to epithelial, there will always be ____ in between

Answer 1

connective tissue

Question 2

give an example of loose connective tissue

Answer 2

adipose (fat cells) found within subcutaneous tissues, bone marrow, etc

Question 3

what kind of cell is this and how do you know?

Answer 3

•Skeletal: nuclei pushed off to sides and straitions are really strong . Striations = vertical lines

Question 4

trachea

Answer 4

ciliated, pseudostratified

Question 5

developmental outcomes post gastrulation for:

endoderm, mesoderm, ecotderm

Answer 5

endo: gut
meso: notochord, muscle, blood
ecto: skin , nervous system, brain, spinal cord

Question 6

name this type of cell

Answer 6

Pseudostratified columnar

Question 7

what kind of cell is this?

Answer 7

neutrophil

A type of immune cell that is one of the first cell types to travel to the site of an infection.

Question 8

what type of cell

Answer 8

stratified squamous epithelial (lots of irregularly shaped cells)

Question 9

what type of cells are these?

Answer 9

goblet cells in white

(small intestine)

goblet cell, mucus, digestive system. Looks like a white space. Its basically a specialized epithelial cell

Question 10

describe features of pseudostratified epithelial cells

Answer 10

columnar. in trachea.

Question 11

define epithelial tissue and give examples

Answer 11

acts as lining to cavities, organs. some special features: basement membranes + near a lumen. may include cilia and goblet cells.

simple or stratified. cuboidal or clumnar or squamous.

Question 12

what kinds of cells do you see here?

Answer 12

cuboidal epithelial with connective tissue in between

Question 13

what are these two types of cells?

Answer 13

tiny ones: platelets

larger: lymphocytes

Question 15

what type of cells are these?

Answer 15

cuboidal, simple epithelial

Question 16

what kind of cells are these?

Answer 16

simple columnar cells

Question 17

what type of cells do you see here?

Answer 17

“simple columnar epithelium and connective tissue”

Question 18

what is connective tissue? give some examples

Answer 18

cartilage, bone, blood, loose connective- all provide support structure or defense. cartilage, fat, bone, loose connective are all structural. (secrete extracellular matrix) blood is involved in bodily defense and transport of materials

Question 19

canaliculi

Answer 19

channels 2 connect cells w/ blood

Question 20

type of cell?

Answer 20

lung

Spaces: alveolus.

Simple squamous epithelil. One cell thick. Lots of surface area over thin surface. Useful for gas exchange. (lungs!)

Question 21

what type of cell is this?

Answer 21

•Cardiac muscle: branched, has striations, but also see it looks like little bunches of hay, which are ‘intercollated disks.’ good for sending action potentials thru all at once

Question 22

type of cell in digestive tract

Answer 22

simple columnar

Question 23

what kind of cell is this?

Answer 23

monocyte

a type of leukocyte, or white blood cell. They are the largest type of leukocyte and can differentiate into macrophages and myeloid lineage dendritic cells

Question 24

what special type of cell is this and waht layers are there?

Answer 24

its a trachea cross section. top: ciliated, pseudostratified, columnar

next: connective tissue

Submucosa- more connective tissue (just say loose connective tissue)

next: tracheal cartilage

Question 25

what kinds of cells are these?

Answer 25

fat cells

Question 26

?

Answer 26

monophil

Monocytes are a type of leukocyte, or white blood cell. They are the largest type of leukocyte and can differentiate into macrophages and myeloid lineage dendritic cells.

Question 27

where would u find stratified squamous

Answer 27

esophagus. skin

Question 28

name the layers of cells seen here

Answer 28

top: layers sloughing off
middle: stratified squamous
bottom: connective tissue

Question 29

digestive tract lining is what kind of cell

Answer 29

simple columnar (epithelial

Question 30

alveoli are what kind of cell

Answer 30

simple squamous epithelial

Question 31

where do you find smooth muscle

Answer 31

walls of hollow organs

Question 32

function of extraembryonic structures in chick egg?

Answer 32

allantois: waste processing
amnion: shock absorber, liquid sack
chorion: Chorion is the outside membrane around everything. mesoderm.

yolk sac: nutrients to developing embryo

Question 33

haversian canal

Answer 33

allows blood 2 reach osteocytes

Question 34

describe an event in:

neuralation, neural crest formation, and organogenesis

Answer 34

neuralation: formation of of neural tube , signaled by notocord (primary indusction) infolding causes it

neural crest formation: development of neural crest, neural crest cells migrate to parts of the body stimulating differentiation

organogenesis: differentiation results in the creation of new organs. stimulated by secondary induction via neural crest cells

Question 35

this is a cross section of bone- describe all the structures you see here

Answer 35

Bone builds in concentric circles surrounding a blood vessel

When bone is made, blood vessel called the haversian canal in which blood vessel comes thru

Canaliculi: canals between osteocytes (bone cells) + vessel. Osteocytes would have lived in the canaliculi

Lacunae: holes that osteocytes live in

Question 36

differentiate these kinds of cells

Answer 36

skeletal vs cardiac

Question 37

who is ultimately responsible for notochord + neural fold?

Answer 37

mesoderm (think mangold experiment)