DEMOS UN ULTIMO ESFUERZO FIGHTIN!!!!!
mechanical digestion
involves chewing food to break it down into smaller pieces
chemical digestion
the breakdowns on large molecules in food into smaller substances by enzymes
amylase
an enzyme found in saliva, begins the process of chemical digestion by breaking down substances into sugars
esophagus
is a muscular tube that consists and connects the pharynx, or throat, to the stomach
peristalsis
rhythmic wavelike muscular contractions that move food throughout the digestive tract
pepsin
an enzyme involved in the process of the chemical digestion of proteins
small intestine
7m in length and is the largest part of the digestive tract
liver
is the largest internal organ at the body and produces bile, which helps to break down fats
villus
fingerlike structure through which most nutrients are absorbed from within the small intestine
large intestine
the end portion of the digestive tract
nutrition
is the process by which a person takes in and uses food
calorie
is the unit used to measure the energy content of foods
vitamins
are organic compounds that are need in small amounts for metabolism
minerals
are inorganic compounds used by the body as building materials, and they are involved with metabolic functions
endocrine functions
produce hormone, which are released into the bloodstream and distributed to the body cells
hormone
is a substance that acts on certain target cells and tissue to produce a specific response
pituitary gland
secrets hormones that not only regulate many body functions but also regulates other endocrine glands, such as the thyroid gland, the adrenal glands, testes and the ovaries
thyroxine
does not act on specific organs, rather, it causes cells of the body to have a higher rate of metabolism
calcitonin
is a hormones that is partly responsible for the regulation of calcium and important mineral for bone formation, blood clothing, nerve function, and muscle contraction
parathyroid hormone
increases blood calcium levels by stimulating the bones to release calcium
insulin
signals body cells, especially liver and muscle cells, to accelerate the conversion of glucose to glycogen, which is stored in the liver
aldosterone
primarily affects the kidneys and is important for reabsorbing sodium
cortisol
another glucocorticoid, raises glucose levels and also reduces inflammation
antidiuretic hormone
functions in homeostasis by regulating water balance
seminiferous tubule
tubule of testes in which sperm develop
epididymis
a structure located on top of each tests where sperm mature and are stored
vas deferens
a duct leading aways from the testis
urethra
the tube that carries both semen and urine outside of the body though the penis
semen
refers to the fluid that contains sperm and other fluid from the male reproductive glands
puberty
the period of growth when sexual maturity is reached
oocytes
which are inmature eggs
menstrual cycle
the events that take place each month in the human female to help prepare the female body for pregnancy
polar body
the smaller of the two structures
morula
a solid ball of cells
blastocyst
a hollow ball of cells
amniotic fluid
protects, cushions, and insulates the embryo
labor
this is beginning of the birthing process
dilation
another sign that the baby is going to be born
expulsion stage
birthing stage during which a baby travels through the birth canal and exits the mother’s body
placental stage
this is the birthing stage
adolescence
which began with puberty and ends at adulthood
infancy
the two first years of life
adulthood
at the end of adolescence, physical growth is complete, marking the beginning of
FDA list
name of the food
net weight
name and address of manufacture
ingredients
nutrient content