Kidney (page 994 - 996) http://wps.aw.com/bc_martini_eap_4/40/1046
9/2680237.cw/content/index.html
Lungs (page 947 - 948)
Neuron (page 1007)
2

Lungs (page 947 - 948) http://health.howstuffworks.com/humanbody/systems/respiratory/adam-200022.htm
3

Neuron (page 1007) http://people.eku.edu/ritchisong/301notes2.ht
m http://highered.mcgrawhill.com/olcweb/cgi/pluginpop.cgi?it=swf::535
::535::/sites/dl/free/0072437316/120107/bio
_a.swf::Sodium-Potassium Exchange
4

Neuron – nerve cell Prefix neur- always refers to something related to the nerves

1.
Cell body : contains nucleus & most of the cytoplasm
2.
Dendrites : projections that bring impulses into the neuron to the cell body.
3.
Axon : long projection that carries impulses away from cell body
2 3
1

This is the pathway of a reflex
Sensory
Neuron
Interneuron
Motor
Neuron
Synapse
Motor
Neuron
Sensory
Neuron
Synapse
Muscle
Contracts

carry impulses from sense organs to spinal cord & brain
Fun Fact:
Where can the largest cells in the world be found?
The giraffe’s sensory and motor neurons! Some must bring impulses from the bottom of their legs to their spinal cord several meters away!!

-processes impulses in brain and spinal cord
- connect sensory and motor neurons

Motor Neurons carry impulses from the brain & spinal cord to muscles & glands
Axon End
Axons branching out to muscle fibers

Human Respiratory System Diagram
Title Page Nasal Passage
Pharynx
Trachea
Bronchus
Bronchiole
Alveoli

JH
CO 2 Air Passing over the mucus membrane of the nasal cavity is moistened, warmed, and filtered
Inside the lungs the
Bronchi branch into small tubes called bronchioles
The Pharynx, or throat, is located where passages from the nose and mouth came together.
If one lobe is injured or diseased, the other lobes may be able to function normally
At the end of the bronchioles are bunches of alveoli, air sacs, arranged like grapes on a stem
Air enters the trachea, or wind pipe which leads to and from the lungs
The trachea divides into two tubes called bronchi

Here is a close up picture of your Alveoli and a Capillary surrounding it.
Capillary
Wall of the air sac
Carbon
Dioxide is dropped off
Oxygen is picked up
Red Blood
Cell
MB

• * At rest, the body takes in and breathes out about 10 liters of air each minute.
• * The right lung is slightly larger than the left.
• * The highest recorded "sneeze speed" is 165 km per hour.
• * The surface area of the lungs is roughly the same size as a tennis court.
• * The capillaries in the lungs would extend 1,600 kilometers if placed end to end.
• * We lose half a liter of water a day through breathing. This is the water vapor we see when we breathe onto glass.
• * A person at rest usually breathes between 12 and 15 times a minute.
• * The breathing rate is faster in children and women than in men.