Lab Chp. Three: Connective, Muscular, and Nervous Tissue Flashcards
General Traits of Connective Tissue
- Most abundant tissue type
- vary in levels of vasularization
- contains cells dispersed in extracellular matrix (matrix is made up of protein fibers and ground substances)
Functions of connective tissues:
- provide support and protection
- help repair from tissue damage
- help protect against infection
- serve as frameworks or bind structures
- May fill: spaces, store fat, or make blood cells
Fibroblast
Produces Fibers
*Connective Tissue
Macrophages
Aid the immune system by doing phagocytosis
*Connective tissue
Mast Cells
Release herapin and/or histamine
*Connective tissue
very strong
Collagen Fibers
*Connective tissue
Elastic Fibers
Allows for expansion and contraction of a tissue
*Connective tissue
Reticular Fibers
very thin, highly branched, collagenous fibers
*Connective tissue
Thinnest of the three fiber types
Reticular fibers
Connective tissue proper
- loose connective tissue
- adipose tissue
- regular connective tissue
- dense connective tissue
- elastic connective tissue
specialized connective tissue
- cartilage
- bone
- blood
- Mainly fibroblasts with collagen and elastic fibers
- Fluid to gell-like matrix
- binds skin to most structure
- Found between muscles
Loose connective tissue
-many collagen fibers and elastic fibers with few fibroblasts
Dense Connective Tissue
- Many elastic fibers and some collagen fibers and fibroblasts
- Form walls of large airways, arteries, and the heart
Elastic Connective Tissue
- Composed of reticular fibers
- Support structure for organs
Reticular connective tissue
_____ carry blood at a higher blood pressure than veins
arteries
- Made up of adipocytes
- Cushions, insulates, and stores fat
Adipose
- Osteocytes and a solid matrix
- Forms the skeleton
Osseous tissue (bone)
General traits of cartilage:
- chondrocytes in lacunae and a rigid matrix
- has a poor blood supply
- exists in three types
3 types of cartilage:
- Hyaline Cartilage
- Fibrocartilage
- Blood
Most abundant type of cartilage:
Hyaline Cartilage
Found at the end of bones
Hyaline Cartilage
Forms the embryonic skeleton, nose, and respiratory passageways
Hyaline Cartilage
- Flexible
- Makes up external ear and larynx
Elastic Cartilage
- Very tough
- Is a shock absorber
- forms intervertebral discs, pads of knees, and pelvic girdle
Fibrocartilage
Blood aids in:
- transport
- clotting
- defense
Blood has a ____ matrix:
Fluid (plasma)
General traits of muscle tissue:
- muscle cells are called muscle fibers
- contractile cells
- three types
Three types of muscle tissue:
- skeletal
- smooth
- cardiac
- Striated
- Voluntary
- Attached to bones
Skeletal Muscle
- Not striated
- Involuntary
- Makes up: walls of organs, walls of blood vessels, part of the skin
Smooth Muscle
- Striated
- Involuntary
- Has intercalated discs
- Makes up walls of heart
Cardiac
Quick movement of calcium from one cell to the next
Intercalated Discs
Cells are branched
Cardiac Muscle
Basic cells of nervous tissue
Neurons
Nervous tissue helps make up:
- Brain
- Spinal cord
- Peripheral Nerves
conduct nerve impulses
Nervous Tissue
Nervous Tissue
- Conduct nerve impulses
- aid in sensory detection
______ cells bind and support nervous tissue components
Neuroglial cells
What are the three major connective cell types?
- Fibroblasts (Produce fibers)
- Macrophages (aid the immune system by doing phagocytosis)
- Mast cells (release heparin and/or histamine)
- loose connective tissue
- adipose tissue
- reticular connective tissue
- dense connective tissue
- elastic connective tissue
connective tissue proper
- cartilage
- bone
- blood
specialized connective tissue
What structures are made up of nervous tissues?
- brain
- spinal cord
- peripheral nerves
Define muscle fiber
muscle cell
What are the two types of nervous tissue?
- neurons (brain cells)
2. neuroglial cells (bind and support nervous tissue components)
Consists of several layers of cube-shaped, elongated, and irregular cells allowing an expandable lining
transitional epithelium
commonly possesses cilia that move dust and mucus out of the airways of the respiratory passages
pseudostratified columnar epithelium
single layer of flattened cells
simple squamous epithelium
forms walls of capillaries and air sacs of lungs
simple squamous epithelium
provides lining of urethra of males and parts of pharynx
stratified columnar epithelium
provides abrasion protection of skin epidermis and oral cavity
stratified squamous
forms inner lining of urinary bladder and ureters
transitional epithelium
lines kidney tubules and ducts of salivary glands
simple cuboidal epithelium
forms lining of stomach and intestines
simple columnar epithelium
two or three layers of cube shaped cells
stratified cuboidal epithelium
forms lining of oral cavity, anal canal, and vagina
stratified squamous epithelium