Semester I Midterm Images

Question 1

Answer 1

simple columnar epithelium

(gall bladder, H-E)

zoomed OUT

Question 2

Answer 2

pseudostratified columnar ciliated epithelium

(epidymis, HE)

zoomed out

Question 3

Answer 3

pseudostratified columnar ciliated epithelium

(epidymis, HE)

zoomed IN

Question 4

Answer 4

simple columnar epithelium (gall bladder, H-E)

Question 5

Answer 5

stratified squamous non-keratinizing epithelium

(esophagus, H-E)

zoomed out

Question 6

Answer 6

stratified squamous non-keratinizing epithelium

(esophagus, H-E)

Question 7

Answer given, but there are other unidentified layers and components

Answer 7

Stratified Squamous Keratinizing Epithelium

palm skin HE

skin in general is keratinizing epithelium

layers, from outside:

1 keratinizing (dead cells) in corneal layer/stratum corneum

2 dying cells in lucidal layer/stratum lucidum

3 keratohyalin granules in the granular layer/stratum granulosum

4 spinous layer/ stratum spinosum

below is basal layer, dermis, hypodermis etc

Question 8

Note the layers

Answer 8

Stratified Squamous Keratinizing Epithelium

palm skin HE

skin in general is keratinizing epithelium

layers, from outside:

1 keratinizing (dead cells) in corneal layer/stratum corneum

2 dying cells in lucidal layer/stratum lucidum

3 keratohyalin granules in the granular layer/stratum granulosum

4 spinous layer/ stratum spinosum

below is basal layer, dermis, hypodermis etc

Question 9

Answer 9

Stratified Squamous Keratinizing Epithelium

palm skin HE

skin in general is keratinizing epithelium

layers, from outside:

1 keratinizing (dead cells) in corneal layer/stratum corneum

2 dying cells in lucidal layer/stratum lucidum

3 keratohyalin granules in the granular layer/stratum granulosum

4 spinous layer/ stratum spinosum

below is basal layer

dermis (MEISSNER BODIES in dermal border)

hypodermis (contains Vater Pacini bodies)

look for sweat glands

{body may be called corpuscles}

Question 10

1

Answer 10

stratum corneum/corneal layer

contains dead skin cells (keratinizing epithelium)

Question 11

2

Answer 11

stratum lucidum

contains dying skin cells

Question 12

3

Answer 12

stratum granulosum

Question 13

5

Answer 13

epidermis

-made of stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale

Question 14

6

Answer 14

dermis

contains Meissner’s Corpuscles closer to border with epidermis

(in image below, Vater Pacini corpuscle should be more in the hypodermis)

Question 15

2

Answer 15

stratum basale

Question 16

1

Answer 16

stratum spinosum

Question 17

Answer 17

stratified columnar epithelium

(penis - urethra, HE)

zoomed out

Question 18

Answer 18

stratified columnar epithelium

(penis - urethra, HE)

zoomed in

Question 19

Answer 19

transitional epithelium

urinary bladder (HE)

this is for STRETCHING

Question 20

Answer 20

transitional epithelium

urinary bladder (HE)

this is for STRETCHING

note “umbrella” cells

Question 21

Answer 21

goblet cells

colon, HE

Question 22

Answer 22

colon HE

goblet cells

Question 23

Answer 23

scalp HE

sebaceous gland (holocrine)

Holocrine glands are glands that secrete whole cells that have completely broken down for elimination from the body (no other types of secretion kill the entire cell). Sebaceous glands are the only type of holocrine glands.

They are located parallel to hair follicles and are usually between hair follicles and the arrector pili muscles that support the follicles, allowing them to contract and tighten around the hair. Before secretion, the whole cells of the sebaceous glands first swell with lipids and other moisturizing agents. Then they break down, die and ooze out to engulf the surface of the skin.

When sebaceous glands disintegrate, they are secreted as a substance called “sebum.” This sebum, though a form of waste, is beneficial since it provides lubrication for hair follicles, reducing hair breakage and giving moisture to dry scalp and dry skin all over the body.

Question 24

Answer 24

scalp HE

sebaceous gland (holocrine)

Holocrine glands are glands that secrete whole cells that have completely broken down for elimination from the body (no other types of secretion kill the entire cell). Sebaceous glands are the only type of holocrine glands.

They are located parallel to hair follicles and are usually between hair follicles and the arrector pili muscles that support the follicles, allowing them to contract and tighten around the hair. Before secretion, the whole cells of the sebaceous glands first swell with lipids and other moisturizing agents. Then they break down, die and ooze out to engulf the surface of the skin.

When sebaceous glands disintegrate, they are secreted as a substance called “sebum.” This sebum, though a form of waste, is beneficial since it provides lubrication for hair follicles, reducing hair breakage and giving moisture to dry scalp and dry skin all over the body.

Question 25

Answer 25

scalp HE sebaceous gland (holocrine) sebaceous glands lead to hair follicles through the sebaceous gland duct Holocrine glands are glands that secrete whole cells that have completely broken down for elimination from the body (no other types of secretion kill the entire cell). Sebaceous glands are the only type of holocrine glands.

Question 26

Answer 26

tubular-alveolar apocrine gland prostate (HE) corpora amylacea (prostate stones) are more frequent with age contains transitional epithelium in parts of urethra (note lumen) if testosterone is high, cells may appear more columnar. if testosterone is low, cells may appear more cuboidal.

Question 27

Answer 27

tubular-alveolar apocrine gland prostate (HE) corpora amylacea (prostate stones) are more frequent with age contains transitional epithelium in parts of urethra (note lumen) if testosterone is high, cells may appear more columnar. if testosterone is low, cells may appear more cuboidal.

Question 28

what is this and what are the sections with violet concentric circles?

Answer 28

tubular-alveolar apocrine gland prostate (HE) corpora amylacea (prostate stones) are the structures with concentric circles in the lumen, more frequent with aging. may appear more solid/calcified.

Question 29

Answer 29

submandibular gland HE merocrine gland tubular-alveolar

Question 30

Answer 30

submandibular gland HE merocrine gland tubular-alveolar

Question 31

identify the type of gland this is and explain components

Answer 31

EXPLANATION OF submandibular gland HE merocrine gland tubular-alveolar \_ Merocrine glands are a type of EXOCRINE gland. Merocrine is the most common manner of secretion. The gland releases its product and no part of the gland is lost or damaged Submandibular gland has serous cells that produce saliva and surround or at least are near mucus cells (mucus isn't stained so it's invisible) in image below, cells to the right are mucus cells and cells to the left are serous cells

Question 32

Answer 32

tendon HE Tendon cells, or tenocytes, are elongated fibroblast type cells. The cytoplasm is stretched between the collagen fibres of the tendon.

Question 33

Answer 33

elastin fibers/ elastic artery (RF resorcin-fuchsin staining) -ability to stretch in response to huge difference in pressuring during pulse through artery layers (from lumen): 1 tunica intima 2 tunica media 3 tunica adventitia Elastic fibers (or yellow fibers) are bundles of proteins (elastin) found in extracellular matrix of connective tissue and produced by fibroblasts and smooth muscle cells in arteries. These fibers can stretch up to 1.5 times their length, and snap back to their original length when relaxed. Elastic fibers include elastin, elaunin and oxytalan.

Question 34

Answer 34

elastin fibers/ elastic artery (RF resorcin-fuchsin staining) -ability to stretch in response to huge difference in pressuring during pulse through artery layers (from lumen): 1 tunica intima 2 tunica media 3 tunica adventitia Elastic fibers (or yellow fibers) are bundles of proteins (elastin) found in extracellular matrix of connective tissue and produced by fibroblasts and smooth muscle cells in arteries. These fibers can stretch up to 1.5 times their length, and snap back to their original length when relaxed. Elastic fibers include elastin, elaunin and oxytalan.

Question 35

Answer 35

reticuline fibers (argentophil fiber) (liver, silver impregnation)

Question 36

Answer 36

reticulin fibers (argentophil fiber) | (liver, silver impregnation AgNO3)

Question 37

Answer 37

fibers of connective tissue scalp skin (AZAN staning, includes mallory {anibin blue + methyl orange} and azocarmin) blue - connective tissue red - epithelia, glands, vessels (due to many nuclei) stratified squamous keratinizing epithelium with sebaceous glands/hair follicles

Question 38

Answer 38

**fibers of connective tissue** **scalp skin** (_AZAN staning_, includes mallory {anibin blue + methyl orange} and azocarmin) blue - connective tissue red - epithelia, glands, vessels (due to many nuclei) stratified squamous keratinizing epithelium with sebaceous glands/hair follicles

Question 39

Answer 39

**umbilical cord (H-E)** - wharton's jelly - simple cuboidal cells - amniotic membrane face image when look at slide outside of microscope or low magnification -identify artery/vein

Question 40

Answer 40

**umbilical cord (H-E)** - _wharton's jelly_ - simple cuboidal cells - amniotic membrane face image when look at slide outside of microscope or low magnification -identify artery/vein

Question 41

Answer 41

**granulation tissue - stomach ulcer (HE)** healing wound, connective tissue appears as 2dimensional depression from lumen - fibroblast/fibrocyte - plasma cells - lymphocytes

Question 42

Answer 42

**granulation tissue - stomach ulcer (HE)** healing wound, connective tissue appears as 2dimensional depression from lumen - fibroblast/fibrocyte - plasma cells - lymphocytes

Question 43

Answer 43

**granulation tissue - stomach ulcer (HE)** healing wound, connective tissue appears as 2dimensional depression from lumen _this is more zoomed in_, reference area no longer visible - fibroblast/fibrocyte - plasma cells - lymphocytes

Question 44

Answer 44

Mast Cell - peritoneum (toluidine blue)

Question 45

Answer 45

Mast Cell - peritoneum (toluidine blue)

Question 46

Answer 46

**white adipose tissue - tongue (Sudan III)** - lipids not removed with this section as they usually are - nuclei are blue - cells are stratified squamous non-keratinizing epithelium

Question 47

Answer 47

**white adipose tissue - tongue (Sudan III)** - lipids not removed with this section as they usually are - nuclei are blue - cells are stratified squamous non-keratinizing epithelium

Question 48

Answer 48

neutrophil granulocyte -blood smear slide

Question 49

Answer 49

basophil granulocyte -purple with darker purple dots

Question 50

what are these 3 different granulocytes?

Answer 50

left: neutrophil top-right: eosinophil (more pinkish and grainy) bottom-right: basophil

Question 51

M is

Answer 51

monocyte