Exam 1 Part 4 Flashcards
stratified cuboidal ET
2-3 layers; sweat and salivary glands
stratified columnar ET
not common
Transitional ET
similar to stratified squamous ET but surface cells rounded
capable of changing shape to allow for istention; urinary system (bladder + ureters)
pseudostratified columnar ET
appears stratified but each cell contacts basement membranes; not all cells exposed
may be ciliated and associated with goblet cells that secrete mucus
in respiratory system cilia help move mucus/particles and direct to digestive system
sensory epithelia
associated with nervous tissues
-connects to nervous cells
Glandular epithelia
cell, tissue, or organ that produces and secretes a substance for use in or elimination from the body
Gland
can be one cell or many
Gland types
exocrine
endocrine
exocrine gland
secrete products into ducts or to lumen of organ
-eventually goes outside body
exocrine gland examples
salivary glands pancrease (digestive enzymes) sebacous -oils mammary glands and sweat glands goblet cells
endocrine gland
secrete hormones directly into blood capillaries
stay with body
endocrine gland examples
thyroid gland
adrenal gland
pancreas (insulin/glucagon
glandular epithelia
cells doing the secreting
Connective Tissue
most abundant tissue in body; very diverse
provides support -structurally and metabolically for other tissues
cells well separated -extensive matrix
capable of mitosis
most are highly vascularized
CT functions
support transport (blood) protection binding fills space (fat) storage (fat, bone (Ca2+)) insulation, cushions
CT types
connective tissue proper
supportive connective tissue
fluid connective tissue
Cell types in CT proper
fibroblasts
adipocytes
fibroblasts
produces fibers in matrix
large, flat, branched
CT proper
adipocytes
fat cells
CT proper
Cell types in supportive CT
chondrocytes
osteocytes
chondrocytes
mature cell of cartilage
osteocytes
mature cell of bone
blood cells
RBC, WBC (platelets)
some WBC leave the blood and wander tissues
Matrix of CT can be
liquid
largely fibrous
solid