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What are the 3 functions of the Respitory System?
- 1. Inhaling Oxygen
- 2. Exhaling Carbon Dioxide and water
- 3. Breathing movement of gases in/out of lungs
II. Path of the air
A. Air goes through .
3. Blood Vessels
- 1. Mucus- moistens air and traps particles
- 2. Cilia- tiny hairs that sweep mucus to the throat
- 3. Blood vessels- warms the air
c. Enters the Trachea
2. The walls of the , are made up of
- 1. Epiglottis- seals off your Trachea when you swallow.
- 2. Trachea
- a. made of rings of cartilage
- b. lined with cilia and mucus
Air enters the right and left which directs air into the lungs.
Air enters the bronchi and goes to the .
- 1. Bronchi
- 2. Small, Alveoli
- Alveoli- tiny sacks of lung tissue where gases exchange between capillaries occur.
- Oxygen- goes into the blood through the capillary wall and CO2 goes the opposite way.
Diaphram- dome shaped muscle at the base of the lungs.
- 1. Diaphram contracts and moves down. Ribs move outward.
- 2. Diaphram moves upward and ribs move inward, pushing air out.
1. Vocal Cords-
2. High Voice-
3. Low Voice-
Larynx- located on top of the trachea
- 1. 2 folds of connective tissue stretched across the larynx.
- 2. vocal cords contract and shorten.
- 3. vocal cords are longer and relaxed.
I. Jobs of the Nerv. System
Recieve info from .
Tells your body to .
Helps maintain .
- 1. signal that makes you react.
- 2. your reaction
- 3. Homeostasis
3 types of Neurons?
- 1. Nerve cells
- 2. message that neurons carry
- 3. Sensory, Inter, and Motor
- 1. picks up the stimulus from the environment and changes it into a nerve impulse.
- 2. carries impulse from neuron to neuron.
- 3. sends impulse to the muscle.
Structure of Neuron:
4. Axon Tips-
- 1. Cell body with a nucleus
- 2. extensions on the cell
- 3. carries impulse away from cell body
- 4. releases chemicals that travel across the synapse
- 5. The chemiclas then go to the dendrites.
1.Central Nervous System-
3.What are the 3 main regions of the Brain?
4. Spinal Cord-
- 1. The conrol center of your body
- 2. Controls most functions in the body.
- 3. Cerebrum, Cerebellum, Brainstem
- 4. Thick column of nerve tissue that links the brain to the peripheral nervous system.
II. Jobs of the Brain
A. Jobs of the Cerebrum:( part of the brain)
- 1. Interpret info from senses.
- 2. Controls the movement of skeletal muscles.
- 3. Makes complex menatl processes: Judgement calls, remember, learning.
Left half of the brain controls the side of the body.
Right half of the brain controls the side of the body.
- 1. Right
- a. Math Skills, logic, writing, speech
- 2. Left
- b. Creative side, artistic ability
Job of the Cerebellum:( the largest part of the brain)
- 1. Coordinates your muscles
- 2. Helps you keep your balance
Job of the Brainstem: (located between and the .)
- Cerebellum and Spinal Cord.
- 1. Involuntary activities; digesting, heart beat, breathing, bladder.
Peripheral Nervous System:
A. Made of:
What are the 2 groups of peripheral nervous systems?
- A. nerves that connect CNS to the body.
- 1. Somatic Nervous System, and Autonomic Nervous system.
- 1. contols voluntary actions
- a. tieing shoes, smiling, frowning
- 2. controls involuntary actions
- a. changes diameter of blood vessels, breathing, digesting
- 1. automatic response that's rapid and without concious control.
- 2. bruiselike injury to the brain. When the Cerebrum hits the skull.
- 3. loss of movement to the part of the body due to spinal cord injury.