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Flashcards in MSK Midterm Deck (305)
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1

Where can you find embryonic connective tissue?

umbilical cord, pulp of teeth

2

embryonic CT is rich in undifferentiated mesenchymal stem cells, extracellular matrix, and sometimes collagen or reticular fiber. what is CT in the umbilical cord called?

wharton's jelly

3

embryonic CT is rich in undifferentiated mesenchymal stem cells can differentiate into what kinds of tissue?

any CT (adipose, cartilage, endothelium, osteocyte)

4

where do we find loose (areolar) CT?

mucosa and submucosa, deep to epithelium (surround vessels in tunica adventitia and nerves)

5

what are the extracellular components of areolar CT?

collagen and elastic fibers, ground substance

6

what are the cellular components of areolar CT?

mast cells, fibroblasts, macrophages

7

where in the body do we find dense regular CT?

tendon, ligament, cornea, fascia

8

fascia is made of what type of CT?

dense regular

9

where do we find dense irregular CT?

dermis and GI submucosa

10

what is the most common extracellular component of dense irregular CT?

collagen

11

what are the 2 kinds of dense irregular CT?

reticular and elastic

12

what type of cell is responsible for producing collagen, elastin, and reticular fiber as well as proteoglycans and glycoproteins for CT?

fibroblast

13

where do we find reticular CT? (dense irregular)

lymphatic tissue

14

where do we find elastic CT) (dense irregular with discontinuous lamellae around the lumen)

walls of large vessels and ligaments

15

what type of cell makes elastic fiber? (its made of elastin + fibrillin)

smooth muscle, fibroblast, chondroblast

16

this type of tissue is used as energy reserve and is unilocular

white fat (adipocytes)

17

this type of tissue is used to dissipate energy and is multilocular

brown fat (adipocytes)

18

which type of fat is rich in mitochondria and has numerous lipid deposits

brown fat

19

adipocytes are a modified form of what cell type that has used vacuole for lipid storage pushing all other cellular contents to the periphery?

modified fibroblast

20

this CT cell is spindle shaped with an oval nucleus

fibroblast

21

this is a 3 chain fibrous protein wound into a triple helix that is coiled for tensile strength

collagen

22

Where do you find Type I collagen? What are characteristics of the fibrils?

bone, tendon, dentin

banded fiber for tensile strength

23

Where do you find Type II collagen? What are characteristics of the fibrils?

hyaline and elastic cartilage

thinner fibrils

24

Where do you find Type III collagen? What are characteristics of the fibrils?

reticular lamina of the basement membrane

reticular fibrils

25

Where do you find Type IV collagen? What are characteristics of the fibrils?

basal lamina

No bundles

26

Where do you find Type v collagen? What are characteristics of the fibrils?

fetal amnion/ chorion, muscle and tendon sheaths

no banded fibrils

27

what is the only kind of collagen that is NON-fibrillar

Type IV (found in basal lamina)

28

macrophages are abundant in what organelle?

lysosomes-help breakdown phagocytized material

29

what do you call a macrophage in the liver? bone? CNS?

liver- Kupffer cell
bone- osteoclast
CNS- microglial cell

30

this cell type is abundant in cytoplasmic granules containing histamine, heparin, and other chemoattractants and can form leukotrienes to be released from the cell

mast cell