midterm prep Flashcards
perxisomes
structure - membranous sacs of catalase and oxidose enzymes function - detoxify number of toxic substances - CATALASE breaks down HYDROGEN PEROXIDE (liver of the cell )
golgi apparatus
structure - a stack of flattened membranes and vesicles function - packages, modifies and segregates for protein secretion
Smooth endoplasmic reticulum
structure - membranous system of tubules, free of ribosomes function - site of lipid and steroid synthesis, lipid metabolism and drug detoxification
Rough Endoplasmic reticulum
structure - membranous system enclosing cavity externally studded to ribosomes function - sugar groups are attached to proteins, synthesize phospholipids
ribosomes
structure - dense particles made of RNA and protein fee or attached to Endoplasmic Reticulum function –
fibroblasts
make up fibres
dendritic cells
found in the skin
aid in immunity
kill bacteria
anatomy is
the study of the structure of the human body
what are the cavities of the body
dorsal and ventral
what are the subdivisions of the ventral body cavity
thoracic = mediastum (in-between the heart and lungs)
pleural (lungs)
pericardial (heart)
Abdominal pelvic = abdominal and pelvic
what are the membranes in the ventral cavity
p.v.v.p - parietal - is the outside covering where visceral is the part that lines the organ
tissue
a collection of cells working together for a common function
types of tissues
epithelial
connective
muscular
nervous
GC of Epithelial tissue
ET and Peter Really Likes Candy Polarity - differences in surfaces Regeneration - cells are constantly replacing due to continuous loss Lacks blood vessels cells are Close fitting
what are the 5 functions of epithelial tissue
protection excretion secretion absorption filtration
simple squamous epithelium (sse)
function - absorption
diffusion
location - lungs (alveoli) used in diffusion
appearance - single layer
squished nucleus
“fried egg”
simple cuboidal epithelium
function - secretion absorption location - kidney tubules found in glands appearance - single layer square cell round nucleus in the middle of the cell
simple columnar epithelium
function - secretion
absorption
location - digestive tract - due to microvilli
appearance - has goblet cells
tall long cells
nucleus 1/3 of the cell
oval, bottom nucleus
stratified squamous epithelium
function - protection
location - epidermis
appearance - multiple layers
pseudo stratified epithelium
function - secretion
protection
location - trachea
appearance - has cilia
goblet cells present
all cells attached to basement membrane
not all cells reach the free surface
transitional epithelium
function - able to expand
location - bladder
appearance - cells go from small to big
GC for connective tissue
Chris Tucker Blows Every Mans Member CT BEMM Blood vessels (many to few) ECM - where Everything sits Mesenchyme - all derived from Many different cells (fibroblast, chrondroblasts)
5 Functions of connective tissues
protection insulation transport bind/support storing energy
Areolar - L. Connective
GC - lots of fibres gel like matrix airy - lots of space FN- good at holding fluid/ions wraps and cushions organs plays a role in inflammation LOC - 1st layer of the dermis
Reticular - L. Connective
GC - web like think spider web strong made of reticular cells network of fibers FN- soft skeleton base for WBC's LOC - spleen lymph nodes
Adipose - L. Connective
GC - nucleus squished closely packed side nucleus blood supply FN- energy storage insulation protects LOC - under dermis mammary
Regular - D. Connective
GC - parallel fibers (collagen)
lots of fibers - fibroblasts
FN- tensile strength in one direction
LOC - tendons and ligaments