Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
Which parts of the cell are basophilic? What charge is this?
|
Nucleus and RER; negative
|
|
Which parts of the cell are acidophilic? What charge is this?
|
Protein; positive
|
|
What type of compounds does a metachromatic stain bind to?
|
polyanions
|
|
5 resident cells of loose connective tissue
|
mast cells, fibroblasts, macrophages, plasma cells, fat cells
|
|
Why are cells in loose connective tissue called resident cells?
|
Exist there all the time
|
|
What is the layer of connective tissue that appears regular beneath the basal layer of epithelium?
|
Lamina propria
|
|
What role do fibroblasts play in connective tissue?
|
Synthesize collagen/proteoglycans, important in development and wound healing
|
|
Collagen synthesis uses what cofactor? Deficiency of this leads to?
|
Vitamin C, scurvy
|
|
Collections of collagen
|
collagen fibril
|
|
What two main types of organization does elastin have?
|
Fibers or fenestrated
|
|
3 substances that make up ground substance
|
Glycosaminoglycans, proteoglycans, multiadhesive glycoproteins
|
|
Purpose of ground substance
|
To control the viscosity of the tissue
|
|
Types of fat
|
brown (multilocular) and white (unilocular)
|
|
What cell type differentiates into two types of adipocyte?
|
Lipoblasts
|
|
What cell organelle does brown fat have a lot of? Why?
|
Mitochondria for heat
|
|
What do brown cell mitochondria use to generate heat without ATP?
|
Thermogenin
|
|
What is the purpose of the plasma cell?
|
makes different kinds of immunoglobulins (so lots in digestive tract)
|
|
What is made in the dark areas of plasma cells?
|
immunoglobulins
|
|
Describe the appearance of mast cells.
|
Many dark spots, centrally located nucleus
|
|
What are the function of mast cells?
|
Set up to bind environmental changes
|
|
When mast cells release their granules, what are the contents of those granules?
|
Histamine (increases vascular permeability and causes edema, contracts smooth muscle); heparin (blocks clotting, binds and inactivates histamine); chemotactic factors for neutrophils and eosinophils (NCF and ECF)
|
|
What do mast cells release from their membranes?
|
Leukotrienes-->from arachidonic acid, inc vascular permeability and smooth muscle contraction as well
|
|
What type of connective tissue makes up tendons?
|
Dense regular connective tissue
|
|
What connects tendons to muscles?
|
Loose connective tissue
|
|
Where is dense irregular connective tissue found?
|
Bladder among other places
|
|
4 purposes of cartilage
|
structural support, shock absorption, reduce friction in joints, template for bone formation
|
|
What cartilage forms the tracheal rings? What type # is that?
|
Hyaline; type II
|
|
2 main layers of cartilage
|
Perichondrium and cartilage
|
|
Describe the growth of chondrocytes.
|
Perichondrial fibroblasts, chondroblasts, chondrocytes (surrounded by territorial matrix)
|
|
2 main types of cartilage growth
|
appositional growth (from perichondrium), interstitial growth (division of chondrocytes)
|
|
What does cartilagenous matrix contain?
|
aggrecan (connected by proteoglycans) and Type II collagen
|
|
What cartilagenous layer does not exist on surfaces of bones?
|
perichondrium
|
|
What occurs when joint cartilage wears away?
|
Osteoarthritis
|
|
Elastic cartilage is sometimes found inside what space?
|
Lacuna
|
|
What type of cartilage are IV discs made of?
|
fibrocartilage (lines of fibroblasts)
|