7C - Muscles and blood Flashcards
What is the Locomotor system?
The Locomotor system consists of bones and
muscles and lets you move.
What bone protects the heart and lungs?
ribs
What is the scientific name for your shoulder blade?
the SCIENTIFIC NAME for the shoulder blade is SCAPULA.
Where are blood cells made?
BLOOD CELLS are made in the centre of your bone, in the BONE MARROW.
What is the word that goes with this description? ‘Muscles cannot push and so bones need pairs of muscles’
Antagonistic pairs
What happens to the muscle when it contracts?
The MUSCLE gets SMALLER AND FATTER when it CONTRACTS.
If one muscle contracts in an antagonistic pair, what does the other do?
In an ANTAGONISTIC PAIR when one CONTRACTS the other RELAXES.
How are muscles controlled?
MUSCLES are CONTROLLED by the NERVOUS SYSTEM.
How does the nervous system communicate with the muscle?
The Nervous system communicates with the muscles by: IMPULSES FROM THE BRAIN, DOWN THE SPINAL CORD AND ALONG NERVES TO THE MUSCLE.
What is another way of saying ‘the breathing system’?
another way would be the GAS EXCHANGE.
During the gas exchange, what gas enters and what gas leaves?
OXYGEN ENTERS the lungs, and CARBON DIOXIDE LEAVES the lungs.
What is circulation?
CIRCULATION is when the blood is carried to the heart through veins, where it it enters the chambers of the heart. The blood is then forced back out when the heart muscle tissue contracts. The pumping of the heart can be felt in arteries as a pulse.
How are arteries connected to the veins?
They are connected by CAPILLARIES. (blood vessels with very thin walls that allow oxygen and nutrients to leave the blood to get to the cells in tissues.)
What are capillaries?
They join arteries and veins together. blood vessels with very thin walls that allow oxygen and nutrients to leave the blood to get to the cells in tissues.
What are drugs?
Drugs are chemicals that affect how the body works.
