THE HUMAN BODY SYSTEMS
MS. BROWNE
GRADE 5 HUMAN BODY SYSTEMS UNIT
SKELETAL SYSTEM
Function
• Support
• Movement
• Protection
• Blood Cell Production
Consists of:
• Bones – 206 in adults
• Joints – where bones meet
• Tendons – attaches muscles to bones
• Ligaments - attaches bones to other bones
MUSCULAR SYSTEM
Function
• Movement of the
 body parts
 things within the body
• Protection
Consists of:
• Muscles
 Smooth - inside organs
 Cardiac - heart/pumps blood
 Skeletal - controlled consciously
RESPIRATORY SYSTEM
Function
• Breathing in oxygen and expelling carbon dioxide
Consists of:
• Mouth/Nose
• Trachea – tube that
•
• Lungs – gives oxygen to
blood and takes out CO2
allows air to pass through • Diaphragm – it contracts
the neck
in order to expand the
lungs to breath in.
Bronchi – carries air to
the lungs from the trachea
CIRCULATORY SYSTEM
Function
• Transportation system of blood throughout the body to deliver:
 Oxygen
 Nutrients
Consists of:
• Heart – muscle that pumps blood
• Blood Vesicles – carry blood throughout body
• Blood - consisting of red (carry oxygen) and white
(fight infections) blood cells
DIGESTIVE SYSTEM
Function
• Breakdown of food in order to receive energy for the body
Consists of:
• Mouth
• Pharynx
• Epiglottis
• Esophagus
• Stomach
• Small Intestine
• Pancreas
• Large Intestine
• Liver
• Gall Bladder
NERVOUS SYSTEM
Function
• Control center of all systems
• Thinking
Consists of:
• Brain
• Spinal cord
• Nerves – receptor,
motor, and
afferent, efferent
SKELETAL & MUSCULAR SYSTEM
SKELETAL SYSTEM
Function
• Support
• Movement
• Protection
• Blood Cell Production
Consists of:
• Bones – 206 in adults
• Joints – where bones meet
• Tendons – attaches muscles to bones
• Ligaments - attaches bones to other bones
SKELETAL SYSTEM
Function:
Support - provides the framework which supports the body and
maintains its shape.
*Draw a picture of what you think we would look like without our
bones
Movement – muscles connect to our bones in order to move our body
Protection
• Skull protects our brain
• Ribs protect our lungs and other organs
• Spine protects out spinal cord
Blood Cell Production – Bone marrow that’s inside of our bones
helps produce our red (carry oxygen) and white (fight infections)
blood cells.
See any system connections yet?
SKELETAL SYSTEM
An adult has 206 bones are in the body.
We can keep them strong by making sure we digest lots of calcium
for them.
SKELETAL SYSTEM
Joints
Where bones meet
SKELETAL SYSTEM
Movable Joints
- Forward and
Backwards
movement
- Most
movement
- Bones glide
against
each other
- Side to
side
movement
SKELETAL SYSTEM
Movable Joints
- Elbows
- Knees
- Shoulders
- Hips
- Wrists
- Ankles
- Neck
SKELETAL SYSTEM
What Joints Are Being Used?
• Wave to your friends
• Sit down and stand up
• Hula Hoop
• Pitch a ball
• Look before you cross the street
• Do a dance
• Push open a door
SKELETAL SYSTEM
Immovable Joints
Fixed Joint - where segments of bone are fused together in the skull.
MUSCULAR SYSTEM
Function
• Movement of the
 body parts
 things within the body
• Protection
Consists of:
• Muscles
 Smooth - inside organs
 Cardiac - heart/pumps blood
 Skeletal - controlled consciously
MUSCULAR SYSTEM
Function
Movement of the

body parts like you arms and legs. Muscles are attacked to
you bones in order to move them.

things within the body such as the heart muscles pumping
blood through your veins
Protect your organ
MUSCULAR SYSTEM
Types of Muscles
Voluntary
Involuntary
- Cardiac Muscles
- Skeletal Muscles
- Smooth Muscles
MUSCULAR SYSTEM
Think of a situation where you would use a voluntary muscle?
How about an involuntary muscle?
Can you think of a situation that would require both?
MUSCULAR SYSTEM
To allow movement, skeletal muscles work in pairs.
While one muscle contracts, the other goes to its normal size.
This is because muscles cannot extend.
DIGESTIVE SYSTEM
DIGESTIVE SYSTEM
Function
• Breakdown of food in order to receive energy for the body
Consists of:
• Mouth
• Pharynx
• Epiglottis
• Esophagus
• Stomach
• Small Intestine
• Pancreas
• Large Intestine
• Liver
• Gallbladder
DIGESTIVE SYSTEM
After the stomach, can you remember where the food goes next?
DIGESTIVE SYSTEM
Small Intestine
After the stomach, food travels into the
small intestine.
The first part of the small intestine works with juices from
the live,
gallbladder,
and pancreas
to continue to break down our food.
DIGESTIVE SYSTEM
Small Intestine
The second part is where the food’s nutrients gets
absorbed.
Nutrients goes through the intestine walls and into the
blood stream.
The blood works to distribute these nutrients to the rest of
the body. (What system does the digestive system work with here?)
This nutrients from the food provides our body with
energy, vitamins, and minerals that it needs in order to
function and grow.
DIGESTIVE SYSTEM
Large Intestine
The last stage is the large intestine.
Any food that the body doesn't need
or can't use is sent to the large
intestine where it water is absorbed
from it.
Later the food matter leaves the body as waste through the rectum.