Tissues Flashcards
Simple Squamous Epithelium
Location: in the air sacs of the lungs (alveoli), vessel walls (endothelium), and serous membranes (mesothelium)
Function: allows for rapid diffusion and filtration as well as secretion
Simple Cuboidal Epithelium
Location: secretory regions of ducts and glands, kidney tubules, surface of ovary
Function: absorption and secretion
Non-ciliated Simple Columnar Epithelium
Location: inner lining of digestive tract
Function: absorption and secretion of mucin
“brush border” microvilli
Ciliated Simple Columnar Epithelium
Location: lining of larger bronchioles (air passageways) of the lungs and uterine tubes
Function: secretion of mucin and movement of mucus along apical surface by cilia; oocyte movement through uterine tube
Ciliated Pseudostratified Columnar Epithelium
Location: lining of larger airways of respiratory tract (nasal cavity, pharynx, larynx, trachea, and bronchi)
Function: protection and secretion of mucin and movement of mucus by cilia
Keratinized Stratified Squamous Epithelium
(superficial layers of cells are dead)
Location: epidermis of skin
Function: protection of underlying skin from abrasion
Non-Keratinized Stratified Squamous Epithelium (all cells are alive)
Location: lines oral cavity, part of pharynx, esophagus, vagina, anus
Function: protection of underlying skin from abrasion
Transitional Epithelium
Location: urinary tract!!
Function: allows for stretching as bladder fills, when stretched apical cells flatten and when relaxed apical cells round
Areolar CT
Location: in the papillary layer of dermis, subcutaneous layer and surrounding organs, nerve and muscle cells, and blood vessels
Function: protects tissues and organs, binds skin and some organs to deeper tissue
Adipose CT - type of loose CT
Location: subcutaneous layer, surrounds and covers some organs
Function: stores energy; insulates, cushions, and protects (brown);
found in newborns (white)
Reticular CT (meshwork of reticular fibers) type of loose CT
Location: lymphatic organs: spleen, thymus, tonsils, lymph nodes, bone marrow, and in the kidneys and liver
Function: structural supporting framework of lymphatic organs
Dense Regular CT (tightly packed collagen fibers, resemble stacked lasagna noodles, long heal time) type of dense CT
Location: tendons and ligaments
Function: attach muscle to bone (tendons) and bone to bone (ligaments); resists stress applied in one direction
Dense Irregular CT (clumps of collagen fibers extending in all directions) type of dense CT
Location: dermis of skin, periosteum of bone, perichondrium of cartilage, capsules around internal organs
Function: withstands stress applied in all directions; durable
Elastic CT (branching, densely packed elastic fibers) type of dense CT
Location: walls of large arteries, trachea, and vocal cords
Function: stretching and recoiling
Hyaline Cartilage (most common in life) type of supporting CT
Location: tip of nose, trachea, larynx, costal cartilage, articular ends of long bones
Function: provides support, forms most of fetal skeleton
Fibrocartilage (weight bearing cartilage, no perichondrium) type of supporting CT
Location: intervertebral discs, public symphysis, menisci of knee joint
Function: resists compression, acts as shock absorber
Elastic Cartilage (flexible, springy) type of supporting CT
Location: external ear, epiglottis
Function: maintains shape while permitting flexibility and resilience
Compact bone
Location: encircle central canal and superficial part of bone
Function: provides levers for body movement, protects organs, stores calcium and phosphorous
Spongy bone/Cancellous bone (latticework structure)
Location: interior of bone
Function: strong and lightweight, site for hemopoiesis
Blood (composed of erythrocytes, leukocytes, and platelets) fluid CT
Location: blood vessels and heart
Function: transports nutrients, wastes, and hormones and help protect body from infectious agents
Skeletal Muscle (visible striations) VOLUNTARY
Location: attaches to bone or skin, forms external urethral and anal sphincters
Function: responsible for moving skeleton and thermoregulation
Cardiac Muscle (intercalated discs, visible striations) INVOLUNTARY
Location: heart wall (myocardium)
Function: pumps blood through heart and blood vessels
Smooth Muscle - INVOLUNTARY
Location: walls of hollow organs: intestines, stomach, airways, urinary bladder, uterus, blood vessels; iris
Function: moves and propels materials through internal organs; controls size of lumen
Nervous tissue (neurons and supporting glial cells)
Location: brain, spinal cord, and nerves
Function: neurons receive, transmit, and process nerve impulses and glial cells protect, nourish and support neurons
