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Cards (39)
digestive system
- the organs that break down food into smaller pieces and absorb nutrients and also
excrete waste
mechanical
- grind/pound the food
chemical
- break down into smaller pieces
mouth
- beginning of the digestive system
teeth -
used for chewing
BOLUS
food mixed with
saliva
esophagus
- delivers food
stomach
- stores food
upper portion -
fundus
lower porting -
antrum
tounge
- muscle covered with a
mucous
membrane
saliva
- can be found in
mouth
parotid
sublingval
submandibular glands
peristalsis
- involuntary contruction and relaxation of longitudinal
small intestine
duodenum
-
foot long
jejunum
-
8 feet
ilelium
-
12 feet
carbohydrates
- fuel or energy
fiber
- vitamins and minerals
insoluble
protein
- builds muscle
water/beverages -
8-10 servings
grains -
6-8 servings
vegetables and fruits -
3 servings
meat, poultry, fish, beans, eggs -
2-3 servings
cell cycle
- the
series
of events that occur in a cell to produce a new cell
s/synthesis phase
- duplication of
DNA
chromosomes
- filled with DNA
DNA
deoxyribunucleic acid
it has our
blue print
2 types of cell
body cells
-
somatic
sex cells
-
sperm and egg cell
mitosis
- occurs in body cell
prophase
nuclear membrane disingregate
centrioles appear & moves to the pole
spindle fibers appears
metaphase
chromosomes line up in the
metaphase region
anaphase
chromosomes are pulled towards the pole
spindle fibers shortens
chromosomes breaks apart
telophase
cleavage furrow occurs
spindle fiber disappear
nuclear membranes reappears
meiosis
- type of
cell division
that takes place during the
creation of sex cells
diploid cell
(2N)
haploid
(N)
male -
spermatogenesis
female -
oogenesis
creation of sperm cells happens in the
testes
while egg cell reproduction happens inside the
ovary
father & mother
23
chromosomes
zygote
46
chromosomes
spermatogenesis
- refers to the production of
spermatozoa
called
sperms
which occur inside the
testes
reproductive cell also known as
spermatogonium
oogenesis
refers to the
creation of gametes
called
ova
which happens inside the ovaries
reproductive female cells known as
oogunium
begins in
meiosis 1