Kategóriák: Minden - diffusion - secretion - absorption - epithelial

a Aligyah Penn 3 éve

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Tissues of the body

The provided content highlights various types of epithelial and connective tissues in the human body, emphasizing their descriptions, functions, and locations. Epithelial tissues are categorized into types like stratified cuboidal, stratified squamous, glandular, stratified columnar, transitional, simple squamous, simple columnar, and simple cuboidal.

Tissues of the body

Tissues of the body

Muscle tissue

Smooth muscle
Located: walls of hallow organs.
Function: propels substances, slower (ex. Peristalsis)
Description: smooth like, spindle like, not cylindrical, uni-nucleated, not striated.
Cardiac muscle
Located: heart
Function: must generate ATP continuously.
Description: much shorter, uni-nucleated, striated, fit close together at junctions called "intercalated discs"
Skeletal muscle
Located: attached to bones.
Function: pulls on bones to make gross body movements or cause changes in facial movements.
Description: long and thin, multi-nucleated, striated.

Subtopic

Connective tissue

Blood
Located: inside the blood vessels
Function: transportation, regulation, and protection
Description: a fluid matrix, called plasma, and no fibers
Reticular tissue
Located: in lymph nodes, bone marrow, and spleen
Function: blood cell formation and immune system defenses
Description: type of loose connective tissue
Adipose tissue
Located: all over the body
Function: the regulation of whole- body energy homeostasis
Description: almost entirely of adipocytes (aka "fat cell")
Areolar tissue
Located: found throughout the body, typically below epithelial
Function: Holds water in matrix, provides support, strength and elasticity
Description: a connective tissue in which fibers are loosely arranged in a net or meshwork
Ligaments
Located: around your joints
Function: serves to hold structures together and keep them stable
Description: a fibrous connective tissue which attaches bone to bone
Tendons
Located: Lying outside the epitenon and contiguous
Function: serves to move the bone or structure
Description: fibrous connective tissue which attaches muscle to bone
Elastic cartilage
Located: in external ear and epiglottis
Function: provides strength, and elasticity
Description: most springy
Fibrocartilage
Located: found between vertebrae and knee joint
Function: provides the tough material of the intervertebral discs
Description: most tensile strength
Hyaline cartilage
Located: in the nose, trachea, larnyx, and bronchi
Function: provides mechanical support for the respiratory tree, nose, articular surface, and developing bones.
Description: pearl gray semitranslucent matrix
Bone
Located: ends of bone
Function: protects and supports body
Description: white and sturdy

Nervous tissue

Supporting cells
Located: the central nervous system (brain and spinal cord)
Function: maintaining homeostatic control and immune surveillance in the nervous system.
Description: non-neuronal cells of the nervous system.
Neurons
Located: the brain, spinal cord, and nerves.
Function: send and receive signals.
Description: branches or spikes extending out from the cell body.

Epithelial tissue

Gladular
Located: a mixture of bone endocrine (ductless, hormones are secreted into the blood
Function: production and release of different secretary products
Description: a single cell or a mass of epithelial cells
Transitional
Located: bladder
Function: stratified epithelia that can stretch
Description: does not fit "tidy" classification
Stratified columnar
Description: many layers like column like cells
Stratified cuboidal
Located: exocrine glands like sweat glands
Function: relatively rare
Description: many layers of cube like cells
Stratified squamous
Located: skin surface/ esaphagus
Function: chemical and mechanical protection
Description: many layers of flat cells
Simple columnar
Located: kidneys, stomach, and intesties
Function: secretion and absorption
Description: single layer of column like cells
Simple cuboidal
Located: kidneys and secretary glands
Function: involved in secretion and absorption
Description: single layer of cube- like cells
Simple squamous
Located: lungs for gas exchange
Function: allows rapid diffusion of substances.
Description: single layer of flat cells of substances.