Chapter 1 Review Flashcards
Human life begins when a tiny egg cell and a sperm unite to form a fertilized egg cell
zygote
When they become a hollow sphere, they are referred as
blastocyst
Once implantation occurs, the cluster of cells
embryo
a sac of blood vessels forms between the bodies of the baby and the mother.
keeps the baby attached to the wall of the uterus and also allow exchanges between his blood and the blood of his mother.
placenta
a bundle of three blood vessels
umbilical cord
the name for an unborn baby when he is distinctly recognizable as a miniature baby
fetus
In what week is the most important period of growth has been completed
9th week
In what month does a baby can hear noises, recognizing both sounds and rhythms.
6 months
Between what ages that a child’s energy level is high
3 and 6
the transition change from childhood into adulthood
adolescence
the stage of development in which the body becomes physically able to reproduce
Puberty
The stimulators of the endocrine system
hormone
The study of endocrine system
endocrinology
the master gland that regulates growth
pituitary gland
a part of the brain that controls your body’s automatic activities and is largely responsible for the physical effects of your emotions.
hypothalamus
a growth hormone, regulates your overall growth rate by stimulating the growth of new tissues.
Somatotropin hormone
secreted by the posterior lobe of the pituitary gland, helps regulate blood pressure and the body’s water balance.
Antidiuretic hormone
the gland that is located on the front of the neck, at the junction of the larynx and trachea
thyroid gland
the chemical and physical processes by which the body burns food and generates energy
metabolism
what contains iodine, is the principal hormone produced by the thyroid gland
thyroxine
what gland regulates the amount of calcium in the blood
parathyroid gland
the emergency action that prepares the body for stressful situations
Epinephrine or adrenaline
what steroid stimulates the kidneys to conserve sodium and excrete potassium and helps regulate the body’s water balance.
aldosterone
what steroid stimulates the body to repair itself following stress, inflammation or injury
cortisol
the important organ that lies behind the stomach.
pancreas
Small clusters of cells that are scattered throughout the pancreas;
islets of Langerhans
what hormone stimulates the liver and muscles to remove glucose from the blood
insulin
what stimulates the liver to convert glycogen into glucose and release it into the bloodstream
glucagon
the reproductive glands
gonads
what gland that regulates sleep
pineal gland
what hormone triggers sleepiness
melatonin
The physical and chemical breakdown of complex nutrients into simpler, water-soluble substances the body can use
digestion
the study of the digestive system
gastroenterology
the part of the tooth that we see
crown
the hardest substance in the body
enamel
bonelike tissue that forms the main part of the tooth
dentin