BotZoo Test 5 Flashcards
skeletal system function
support for body
protection of body parts
movement
movement
muscles exert force against skeletal system, resulting in movement
hydrostatic skeleton
cnidarian, platyhelmenthes, nematoda, annelida, Mollusca
- gastrovascular cavity
- pseudo/coelom
exoskeleton
arthropoda
-chiton and protein
endoskeleton
chordata, Echinodermata, porifera
- chordata: cartilage, bone
- Echinodermata: calcium carbonate
- porifera: spicules- silica, protein
human skeletal system functions
- protect: skull, ribcage, pelvis
- movement
- support
- sensory transduction- ear
- hematopoiesis- red bone marrow
- adipose storage - yellow bone marrow
- calcium and phosphate storage
red bone marrow
create blood cells
yellow bone marrow
storage of fats
mandible
lower jaw
clavicle
collar bone
scapula
shoulder bone
humerous
upper arm
radius
leading to thumb
ulna
not leading to thumb
carpels
hand
metacarpels
small hand bone
phalanges
fingers
femer
biggest
tibia
front
fibula
back
patella
knee caps
tarsals
foot
metatarsals
small foot bones
sternum
breast bone
tissues of human skeletal system
- ligaments: holds bones together- connective tissue
- cartilage: shock absorber
- bone: collagen; calcium phosphate
osteoblast
builds bone
osteocyte
mature bone cell
osteoclast
break down bone
calcitonin
bones absorb calcium
parathormone
bones release calcium
osteoporosis
porous bones- decrease bone density
estrogen- decrease osteoblast activity
prevent it: exercise, calcium, estrogen substances, drugs
ligaments
bone to bone
tendons
muscle to bone
joints
ball and socket, hinge, pivital
ball and socket
hip and shoulder
hinge
one directional movement; knee and elbow
pivital
wrist, neck
muscular system function
movement
moves body, blood, food, air, waste
cardiac muscle
striated; involuntary: in the heart: moves blood. one nucleus per cell
smooth muscle
involuntary: around organs, digestive, urinary, respiratory. one nucleus per cell
skeletal muscle
striated; voluntary: movement of body. many nuclei per cell
skeletal muscle
striated; voluntary: movement of body. many nuclei per cell
energy for muscle contraction
- ATP –> ADP
- creatine monophosphate
- cellular respiration
- lactic acid fermentation
creatine monophosphate
builds atp back up
cellular respiration
C6H12O6+6H2–>6H2O+6CO2+36ATP
- cytoplasm- mitochondria
- aerobic respiration
lactic acid fermentation
glucose–>lactic acid (lower pH)
- lactic acid goes to liver
- more ATP
digestion function
break down food
goal: obtain nutrients and eliminate waste
stages of digestion
- ingestion
- mechanical breakdown
- chemical breakdown
- absorption
- eliminate waste
carbohydrates
polysaccharides->disaccharides->monosaccharides
proteins
polypeptide->peptides->aminoacids
lipids
triglycerides->glycerol+ 3 fatty acids
nucleic acids
DNA/RNA–>nucleotides
intracellular digestion
porifera, cnidaria
gastrovascular cavity
cnidarian, platyhelminthes
complete digestion
nematoda, annelida, Mollusca, Echinodermata, arthropoda, chordata
human digestive system
- oral cavity- ingestion
- pharynx- throat
- esophagus- (tube)- epiglottis- peristalsis
- stomach
stomach
- lower esophageal- ring of muscle
- pyloric sphincter- ring of muscle
1. stomach churns- mechanical breakdown
2. chemical breakdown (pH 1-2)
3. other (mucus, HCL) Gastrin
small intestine
1”x10ft
- chemical breakdown
- pancreas
- liver/gall blatter
liver/gall blatter
- bile helps with metabolism of lipids
- the more surface area, the more it breaks down
- emulsifies lipids
- absorption
large intestine
3”x5ft
- colon+rectum (last 6 inches)
- absorption of water
- left with feces- 1/3 bacteria (produces vitamins)
endocrine system
- important for homeostasis
- special cells are stimulated
- secrete hormones
- hormones secreted and travels through bloodstream
- binds to target cell
- signal into target cell
- target cell changes its activity
local hormone
-paracrine effect
-prostoglondin
(cause inflammation) (causes contractions in childbirth)
types of hormones
- proteins/ peptide - oxytocin
- amino acid- thyroxine
- steroid- fat soluable
hypothalamus
neurosecretory cells
- anterior pituitary
- posterior pituitary
anterior pituitary
- FSH- Follicle Stimulating Hormone
- LH- Luteinizng Hormone
- overies- estrogen/progesterone
- testes- testosterone - TSH- Thyroid Stimulating Hormone
- thyroid gland- throxine - ACTH- Adrenocorticotropic Hormone
- cortex of adrenal glands- glucocorticoids - Prolactin- development of mammory glands and milk production
- MSH- Melanocyte stimulating hormone
- skin- melanin - GH- Growth Hormone
- important for growth of cells ex: giantism; dwarfism
posterior pituitary
extension of hypothalamus
- oxytosin
- release milk
- unterine contractions - ADH- Anti Diuretic Hormone
- retain water
- low H2O –> release ADH –> kidneys –> nephrons/collecting ducts –> increase permeability –> body reabsorbs H2O
- alcohol inhibits ADH
acromegaly
big hands, big feet, big face
thyroid gland
- thyroxine- iodine containing hormone
- increase thyroxine –> increase metabolism
- break down glucose, release energy, release heat
hyperthyroidism
produce too much thyroxine
- increased metabolism, weight loss, sweaty, anxious, sleepless, hungry
- ex: grave’s disease
- radioactive iodine, remove, drugs
hypothyroidism
produce too little thyroxine
-weight gain, loss of appetite, cold, tired/fatigue, decrease in metabolism
goiter
bump in the neck.
-not enough iodine/ thyroxine
parathyroid
parathormone- low calcium
- parathormone –> increase osteoclast, decrease osteoblasts
- kidneys- absorb Ca+2
- GI- activate vitamin D
- absorb Ca+2
calcitonin
high Ca+2 –> calcitonin
pancreas
islet cells
islet cells
blood glucose levels
- beta islet (b shape)
- alpha islet (fish shape)
beta islet
insulin
- increase blood glucose –> release insulin –> take glucose into cells –> increase metabolism of glucose
- glucose –> glycogen (liver
alpha islet
glucagon
- decrease blood glucose –> release glucagon –> release glucose into cells –> fat metabolism
- glucagon –> glucose
diabetes mellitus
defect in insulin production or in ability to respond
- type I
- type II
- gestational
type I
- juvenile
- not producing insulin
- autommune attack and kill beta cells
- insulin dependent
type II
- adult
- insulin resistant
gestational
pregnancy
urinary system main function
maintain homeostasis
urinary system process
- filter fluids of the body- blood, interstitial fluid, to remove waste, nutrients, water (filtrate)
- reabsorb nutrients and water
- eliminate waste, excess water, excess nutrients (through urine)
Platyhelminthes excretory system
- protonephridia
- flame cells move filtrate through body
- fluid travels through tubule
- waste exits through pores
annelida excretory system
- nephridia
- nephrostome- how fluid gets inside
- nephridiopore- how waste exits (outside of body)
arthropoda excretory system
- insecta
- malpighian tubules
- open circ system- hemocoel
human urinary system functions
- remove waste- urea
- maintain/ regulate blood, h2o levels
- regulate blood pH
- regulate blood ions (na+, k+, ca+)
- regulate nutrients
- hormone- erythropoietin (in bone marrow)- produce RBCs (erythrocytes
urea
- enzymes break down proteins
- break down amino acids to get ammonia (toxic)
- liver changes ammonia to urea
- travels through blood and exits body
human urinary system structure
1. kidneys- filter blood, produce urine renal artery --> filtered --> renal vein 2. ureter -contains smooth muscle -contracts, relax- peristalsis 3. bladder -smooth muscle -inner sphincter (involuntary) -outer sphincter (voluntary) 4. urethra -8" 1.5" -UTI (Escherichia col)
kidneys structure
- renal cortex (nephron)
- renal medulla (nephron)
- renal pelvis- collect urine and transport to ureter
nephrons
filters blood, creating urine
nephron process
- filtration
- tubular reabsorption
- tubular secretion
- concentration
loop of henle
pumps out salt
- longer it is, more salt
- shorter it is, less salt