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Draw a neuron and its parts
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What is the nervous system?
It controls body movement, behavior and thought.
It is an organ system that contains a network of specialized cells called neurons.
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The nervous system is divided into _________
and __________.
The nervous system is divided into the brain_and _the spinal cord.
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the four parts of the brain and its functions
1 - cerebrum : interprets information, controls muscle movement, thinking and language
2- cerebellum : controls balance, posture, and helps fine tune movement.
3- brain stem : maintains the blood pressure, heartbeat, respiration and digestion
4- spinal cord : a tube of neurons that sends information to the brain
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what are three types of drugs?
1 - Depressants : you feel relaxed. examples, alcohol and cannabis
2- Stimulants: stimulate the brain, increase body temperature etc. examples coffee, energy drinks
3 - Hallucinogens : affect your perception. you see and hear things that are not there. examples: LSD, mushrooms
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What is the endocrine system?
A system made of glands that helps balance the body's processes like growth and sugar level in the blood.
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What is a gland?
An organ that produces a chemical substance.
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What does the pituitary control?
- Development and growth,
- it controls the thyroid,
- the ovaries, testes and other glands.
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the pancreas controls...?
the amount of glucose in the blood.
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The parathyroid controls.....?
The amount of calcium and phosphorus in the blood.
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What is diabetes?
a condition where the pancreas doesn't produce enough insulin to convert sugar into energy.
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Gigantism is an excess of ___________- hormone.
Gigantism is an excess of growth hormone.
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In osteoporosis the bones....
In osteoporosis the bones are fragile and break easily.
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Hyperthyroidism is an excess of ....
Hyperthyroidism is an excess of thyroid hormone.
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what are the external female and male reproductive organs?
female: vulva.
male: penis and testicles.
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What are the internal male organs?
- testicles,
- epididymis,
- vas deferens,
- prostate gland,
- seminal vesicle,
- the urethra
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What are secondary sexual characteristics?
Secondary sexual characteristics are related to each sex but not to sexual reproduction.
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Explain two male and two female secondary characteristics.
Male: muscles, facial hair
famale: breasts and hips, menstrual cycle
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What is the male hormone?
Testosterone.
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What are the two female hormones?
Estrogen
and
Progesterone
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