Lab 6
Characteristics of hyaline (not a proper tissue)
-amorphous but firm matrix, collagen fibers, lacuane -supports enforces cushions, compression -nose, ribs, trachea -eyeballs "forms the larynx, costal cartilages of the robs, and the embryonic skeleton"
Characteristics of osseous tissue (not proper tissue)
-hard calcified matrix with collagen fibers. osterocytes vascularized -bone supports muscles, stores calcium, marrow used for blood cell formation -bones -tim burton tree sprials "attaches bones to bones and muscles to bones"
Characteristics of dense irregular connective tissue
-irregularly arranged fibers -for exertion in many directions -joints, skin, digestive tract -many squished muscles "forms fibrous joint capsule"
Characteristics of Dense regular connective tissue
-parallel collagen fibers, fibroblasts -attaches to muscles/bones to move in one direction -tendons, most ligaments -wavy eyebrow "provides levers for muscles to act on"
Characteristics of blood (not proper tissue)
-red and white blood cells in fluid matrix -transport oxygen, nutrients, wastes -blood vessels -red cherrios
Characteristics of Reticular (loose connective tissue)
-reticular fibers lie on a loose network -Stroma (skeleton) to support other cells like white blood, mast, and macrophages -Lymphoid organs (bone marrow, spleen etc) - cherry blossom
Characteristics of elastic connective tissue
-same as dense regular with elastic fibers -allows recoil vital for blood flow and respiration -walls of arteries, bronchial tubes -thick wavy eyebrows "forms walls of large arteries"
Characteristics of fibrocartilage (not proper tissue)
-similar to hyaline but less firm, thick collagen fibers -absorb shock -intervertebral discs, knee discs -wavy eyebrow with bubbles "makes up the intervertebral discs"
Characteristics of elastic (not proper tissue)
-similar to hyaline but more elastic fibers - maintain shape with flexibility - ear - big spooky eyes on a tree "provides a flexible framework of external ear"
5 characteristics of epithelial tissue
1. Polarity (have one free apical surface and one basal surface) 2. specialized contact (cells fit close to form membranes and specialized junctions) 3. Supported by connective tissue (basement membrane) 4. Avascular but innervated (connective provide nutrients) 5. regeneration (due to constant abrasion)
5 general functions of epithelial tissue
1. protection (skin) 2. absorption (intestine) 3. secretion (glands) 4. filtration (kidney) 5. diffusion (lung and blood vessels)
Two developed characteristics of neurons
Cell body- receive signals neuron processess- generate electrical signals to rest of body
This tissue 1. anchors, packages, and supports body organs 2.derived from mesenchyme 3. the most widespread tissue in the body
Connective tissue
This tissue 1. Lines body cavities and covers body's external surface 2. classified based on shape and arrangement of cells 3. forms endocrine and exocrine glands
Epithelium
How do the endocrine and exocrine glands differ in structure and function?
Exo- contains ducts, sweat/ oil glands found in liver and pancreas externally and internally Endo- no ducts, release hormones in blood or lymphatic vessels directly
How are the functions of connective tissue reflected in its structure?
Ground substances keep it anchored, flexibility varies with firmness of tissue
Location, cell type, and function of microvili
Intestines stratified columnar increase surface area for absorption and excretion
How does transitional epithelium differ structurally from other stratified squamous epithelia?
Its basal cells are cuboidal or columnar, and its surface cells are dome shaped/ squamous like
Location, cell type, and function of Cilia
Lungs, uterus stratified squamous, psuedostratified columnar coordinated sweeping removes mucus and debris
How does the structural difference of transitional epithelium support its function?
Most stratified epithelia mainly function to protect, but transitional can also stretch and distend so that the bladder can hold more urine.
This tissue 1. Pumps blood, flushes urine out of the body, and allows one to swing a bat 2. major function is to contract
Muscle
Skeletal muscle
attached to bones voluntary many nuclei cylindrical cells striated
List from simple to complex (organs, tissue, cells, organ system)
cells, tissue, organ, organ system
Three characteristics of connective tissue
common origin (mesenchyme) degrees of vascularity extracellular matrix
Cardiac muscle
forms walls of heart striated branching cells one nucleus intercalated discs involuntary
smooth muscle
in wall of bladder and stomach spindle shaped cells one nucleus involuntary
What do epithelial that provide protection have in common?
multiple layers to protect against friction and trauma
This tissue 1. transmits electrical signals 2. consists of cells within extracellular matrix 3. forms nerves and the brain
nervous tissue
Two main nervous tissues
neuroglia and neurons
functions of connective tissue
protect, support, insulate, bind together
Histology is
the study of tissues
Location, cell type, and function of goblet cells
trachea, bronchi simple columnar, psuedostratified columnar secrete mucus to protect membranes
Characteristics of areolar (loose connective tissue)
-Gel-like matrix(fibroblasts, macrophages, mast cells, white blood cells) -Wraps and cushions organs, inflammation, tissue fluid -under epithelia of body (lamina propria of membranes, surrounds capillaries) -ball of spider webs "composes basement membranes, a soft packaging tissue with jellylike matrix"
Characteristics of Adipose (Loose connective tissue)
-Matrix sparse, fat cells, nucleus pushed to side -Provides fuel and retains heat -under skin, eyeballs, breasts, abdomen -fat droplets "insulates against heat loss"