Body systems Flashcards
Digestive system:
What role does the mouth play?
The mouth
-breaks down the food with mechanical digestion
If you laugh and talk while eating»_space;
Choking
How long does it take for the food to get to the stomach??
About 10 seconds.
What is saliva and what does it do??
Saliva is spit you create when you eat, and it breaks down the food.
What is the difference between the Small Intestine and the Large?
The small absorbs useful, smaller, foods with nutrients.
The large intestine takes any parts the body cannot use
Circulatory system;
What is: A
V
Atrias and ventricules.
atria is the 2 chambers on top of the heart and ventricles are the chambers on the bottom.
Veins carry the blood where?
Back to the heart.
The blood travels though pipes called what?
Blood vessels
53% of blood is made up of a liquid substance called ______ …
plasma
What is the difference between white blood cells and red blood cells?
Red blood cells, carry oxygen from your lungs throughout the body.
White blood cells defend the body against diseases.
Muscular system:
The body has how many muscles??
600 muscles.
May delete: Muscles are attached to what:
Tendons
What are the 3 ways muscles can move?
- expanding
- contracting
- shrinking
What is the biggest muscle in the body?
Gluteus Maximus
What are some types of muscles?
- Skeletal muscles
- smooth muscles
- cardiac muscles
- involuntary muscles
- voluntary muscles
Nervous system:
nerves are made up of what?
Neurons
Sensory nerves carry messages from another body part to where?
To the brain.
Volunatary reflexes are:
Things you tell your body to do.
Motor nerves transmit signals to the:
Outer body parts
Nerves are based on the 5 what?
5 senses. Taste, touch, hear, smell, sight.
Respiratory system:
What is inhalation and exhalation
Inhalation: Breathing in
Exhalation: breathing out
Where are the diaphram muscles locates?
Right under the lungs, they give you room.
Why is the lung on the left smaller than the one on the right?
It is smaller because it needs to leave room for the heart!
Yawning is a way of….
Getting oxygen.
Skeletal system:
the human body has how many bones??
206 bones!
What does the skeletal system do for the body??
It gives the body shape, protects it, and lets it move.
What are the 4 bone layers in order from outside to inside?
Periosteum, then compact bones, followed by cancellous bone, and last bone marrow.
Whatn are the 4.. types of bones?!
Short bones, long bones, flat bones, sesamoid bones.
What are the 3 most important bones and how?
Spine: allows you to sit/ stand.
Skull: protects the brain
Rib cage: protects the lungs/ hearts, and organs etc…
Joints do what?
Joints allow bones to move back and fourth
