it provides a framework for the body and allows movement. It also protects and gives the body shape.
what are five functions of skin?
provide protective covering for the body
skin pigmentation
skin color resulting from the presence of melanin
what is body posture?
Posture is how you hold your body.
arteries
blood vessels that carries blood away from the heart
what are the two layers of skin called?
epidermis and dermis
what does insulin do?
It makes the liver convert glucose into glycogen. This causes blood glucose levels to decrease.
What are the two female sex hormones?
estrogen and progesterone
voluntary muscles
muscles that are under your conscious control
digestion
the process of physically and chemically breaking down food so it can be absorbed by the cells
organ
groups of tissues with the same function
what do involuntary muscles control?
actions of the stomach, intestines, blood vessels and other organs
what is a joint?
A joint is a point where two bones make contact
why is mitosis needed?
for tissue growth and repair
What is menstruation?
shedding of the endometrium (lining of the uterus)
What does the pancreas do?
Produces insulin
cell membrane
the outer covering of the cell
what are 3 functions of muscles?
movement of body parts, maintenance of posture and production of body heat.
hormone
chemical substance secreted by the glands into the blood stream
hemoglobin
the substance in red blood cells that carries oxygen and gives blood its color
system
organs that work together to perform specific functions
how many chromosomes in a cell?
46
vein
a blood vessel that carries blood back to the heart
What is the male sex hormone?
testosterone
pituitary gland
The endocrine system's most influential gland. Under the influence of the hypothalamus, the pituitary regulates growth and controls other endocrine glands.
How long is menstrual flow usually?
3- 7 days
metabolism
the burning of food for heat and energy by the cells
nucleus
the control centre of the cell
peristalsis
involuntary muscle contractions in the digestive system which move food through the alimentary canal
dead cells flake off
កោសិកាដែលងាប់បានជ្រុះ រឺ របក
Thyroid Stimulating Hormone (TSH)
stimulates secretion from thyroid gland
what is cartilage?
connective tissue at the ends of long bones
how many pairs of chromosomes in a cell?
23
what is mitosis?
it is the process of cell division.
capillary
a tiny blood vessel. food, oxygen and other substances pass from capillaries to cells
where are blood cells produced?
in bone marrow
what is the endometrium ?
inner lining of the uterus
What is menstruation?
the process in which the lining of the uterus breaks up and is discharged from the body though the vagina
cells
basic unit of body structure
what do genes do?
they control the physical and chemical traits that children inherit from their parents including height, eye and skin colour
sweat glands
The glands that secrete sweat, located in the dermal layer of the skin.
balance
តុល្យភាព
What does the endocrine system do?
Endocrine glands secretes chemicals (hormones) that deliver messages through the bloodstream to distant tissue
tissue
a group of cells with the same function
bones are hard, rigid structures
ឆ្អឹងគឺរឹង និងមានរចនាសម្ព័ន្តរឹងខ្លាំង
involuntary muscle
muscle that responds automatically to brain signals but cannot be consciously controlled
how many bones in the human body?
206
where are the eggs stored in a woman's body?
ovaries
respiration
the process of supplying the cells with oxygen and removing carbon dioxide from them
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