Body Tissue

0.0(0)
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/40

flashcard set

Earn XP

Description and Tags

idk

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

41 Terms

1
New cards
4 primary types of tissue, what are they?
* muscle
* nervous
* connective
* epithelial
2
New cards
epithelial tissue functions and locations
* locations
* body coverings
* body linings
* functions
* protection
* absorption
* filtration
* secretion
3
New cards
where does epithelial tissue line and cover?
covers and lines body surfaces, forms sheets with one free surface, the apical surface (top), an anchored surface, the basement membrane (bottom)
4
New cards
number of cell layers for simple and stratified
simple - one layer

stratified - more than one
5
New cards
different types of cell shapes
* squamous - flattened
* cubodial - cube-shaped
* columnar - shaped like columns
6
New cards
simple epithelial tissue function and density
* functions in secretion, absorption, and filtration
* very thin(one layer), not suited for protection
7
New cards
simple squamous epithelium
* single layer
* usually forms membranes
* lines air sacs of lungs
* forms walls of capillaries
* forms serous membranes, the line and cover in ventral cavity
* functions in diffusion, filtration, or secretion in membranes
8
New cards
single cuboidal epithelium
* located in glands and their ducts
* walls of kidney tubules
* covers the surface of ovaries
* functions in secretion and adsorption like ciliated types propel mucus or reproductive cells
9
New cards
single columnar epithelium
* single layer of tall cells
* located in lining of digestive tract from the stomach to anus and mucous membranes line body cavities opening to the exterior
* function - secretion and absorption
10
New cards
* Pseudostratified columnar epithelium
* Location: respiratory tract, where it is ciliated and known as pseudo-stratified ciliated columnar epithelium
* Functions in absorption or secretion
11
New cards
Stratified epithelia
* consists of two or more cell layers
* function primarily in protection
12
New cards
Stratified squamous epithelium
* Functions as a protective covering where friction is common
* Locations—lining of the:
* Skin (outer portion)
* Mouth
* Esophagus
13
New cards
Stratified cuboidal epithelium—
* two layers of cuboidal cells;


* functions in protection
14
New cards
Stratified columnar epithelium—
* surface cells are columnar, and cells underneath vary in size and shape;
* functions in protection
15
New cards
* Stratified cuboidal and columnar
* Rare in human body
* Found mainly in ducts of large glands
16
New cards
Transitional epithelium
* Composed of modified stratified squamous epithelium
* Shape of cells depends upon the amount of stretching
* Functions in stretching and the ability to return to normal shape
* Location: lining of urinary system organs
17
New cards
* Glandular epithelia
* One or more cells responsible for secreting a particular product
* Secretions contain protein molecules in an aqueous (water-based) fluid
* Secretion is an active process
18
New cards
Two major gland types develop from epithelial sheets
* Endocrine glands
* Ductless; secretions (hormones) diffuse into blood vessels
* Examples include thyroid, adrenals, and pituitary
* Exocrine glands
* Secretions empty through ducts to the epithelial surface
* Include sweat and oil glands, liver, and pancreas (both internal and external)

\
19
New cards
connective tissue
* Found everywhere in the body to connect body parts
* Includes the most abundant and widely distributed tissues
* Functions
* Protection
* Support
* Binding
20
New cards
connective tissue variation blood supply
* Variations in blood supply
* Some tissue types are well vascularized
* Some have a poor blood supply or are avascular
21
New cards
what is extracellular matrix
nonliving material that surrounds living cells
22
New cards
Two main elements of the extracellular matrix
* Ground substance—mostly water, along with adhesion proteins and polysaccharide molecules
* Fibers
* Collagen (white) fibers
* Elastic (yellow) fibers
* Reticular fibers (a type of collagen)
23
New cards
Types of connective tissue from most rigid to softest, or most fluid:
* Bone
* Cartilage
* Dense connective tissue
* Loose connective tissue
* Blood
24
New cards
* Bone (osseous tissue)
* Composed of:
* Osteocytes (bone cells) sitting in lacunae (cavities)
* Hard matrix of calcium salts
* Large numbers of collagen fibers
* Functions to protect and support the body
25
New cards
Cartilage
* Less hard and more flexible than bone
* Found in only a few places in the body
* Chondrocyte (cartilage cell) is the major cell type
* Types
* Hyaline cartilage
* Fibrocartilage
* Elastic cartilage
26
New cards
Hyaline cartilage
* Most widespread type of cartilage
* Abundant collagen fibers hidden by a glassy, rubbery matrix
* Locations
* Trachea
* Attaches ribs to the breastbone
* Covers ends of long bones
* Entire fetal skeleton prior to birth
* Epiphyseal (growth) plates in long bones
27
New cards
Elastic cartilage
* Provides elasticity
* Location: supports the external ear
28
New cards
Fibrocartilage
* Highly compressible
* Location: forms cushionlike discs between vertebrae of the spinal column
29
New cards
Dense connective tissue (dense fibrous tissue)
* Main matrix element is collagen fiber
* Fibroblasts are cells that make fibers
* Locations
* Tendons—attach skeletal muscle to bone
* Ligaments—attach bone to bone at joints and are more elastic than tendons
* Dermis—lower layers of the skin
30
New cards
Loose connective tissue
* Softer, have more cells and fewer fibers than other connective tissues (except blood)
* Types
* Areolar
* Adipose
* Reticular
31
New cards
Areolar connective tissue
* Functions as a universal packing tissue and “glue” to hold organs in place
* Layer of areolar tissue called *lamina* *propria* underlies all membranes
* All fiber types form a loose network
* Can soak up excess fluid (causes edema)
32
New cards
Adipose connective tissue
* Functions
* Insulates the body
* Protects some organs
* Serves as a site of fuel storage
* Locations
* Subcutaneous tissue beneath the skin
* Protects organs, such as the kidneys
* Fat “depots” include hips, breasts, and belly
33
New cards
Reticular connective tissue
* Forms stroma (internal framework) of organs
* Locations
* Lymph nodes
* Spleen
* Bone marrow
34
New cards
Blood (vascular tissue)
* Blood cells surrounded by fluid matrix known as *blood* *plasma*
* Functions as the transport vehicle for the cardiovascular system, carrying:
* Nutrients
* Wastes
* Respiratory gases
35
New cards
muscle tissue
* function is to contract, or shorten, to produce movement
* Three types of muscle tissue


1. Skeletal
2. Cardiac
3. Smooth
36
New cards
Skeletal muscle tissue
* Packaged by connective tissue sheets into skeletal muscles, which are attached to the skeleton and pull on bones or skin
* Voluntarily (consciously) controlled
* Produces gross body movements or facial expressions
* Characteristics of skeletal muscle cells
* Striations (stripes)
* Multinucleate (more than one nucleus)
* Long, cylindrical shape
37
New cards
Cardiac muscle tissue
* Involuntarily controlled
* Found only in the heart
* Pumps blood through blood vessels
* Characteristics of cardiac muscle cells
* Striations
* One nucleus per cell
* Short, branching cells
* Intercalated discs contain gap junctions to connect cells together
38
New cards
Smooth (visceral) muscle tissue
* Involuntarily controlled
* Found in walls of hollow organs such as stomach, uterus, and blood vessels
* Peristalsis, a wavelike activity, is a typical activity
* Characteristics of smooth muscle cells
* No visible striations
* One nucleus per cell
* Spindle-shaped cells
39
New cards
Nervous Tissue
* Function is to receive and conduct electrochemical impulses to and from body parts
* Irritability
* Conductivity
* Composed of neurons and nerve support cells

Support cells called *neuroglia* insulate, protect, and support neurons
40
New cards
what are the shapes for squamous, cuboidal, and columnar?
* squamous - flattened
* cubodial, cube shaped
* columnar - shaped like columns
41
New cards