Biology muscles

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  • Created by: Millie p
  • Created on: 01-02-17 15:52
What are the three main functions a skeleton has
Support. Movement protects
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What rigid tissue can support weight without bending
Bones
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What tissue contracts and relaxes to cause movement
Antagonistic muscles
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Describe a tendons
Are strong fibrous flexible connective tissues that join muscles to bone
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What are between bones in. A joint
Ligaments are strong and elastic connective tissues that connect bones together in a joint
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What are antagonistic pairs
Muscles whic work in pairs to make bones move they take in turn to contract and relax
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When your arm moves upwards ( flexed ) which muscles contract and which relax
The bicep contracts and the tricep relaxes
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How do u stay fit
Balanced diet , exercise regularly , avoid Alcohol and drugs
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Energy is released from a sugar called glucose through the process of
Aerobic respiration
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The word equation for aerobic respiration is
Oxygen + glucose = carbon dioxide and water
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For respiration to take place what organs are needed
Breathing system _ supplies oxygen removes carbon dioxide The digestive system - provides glucose. Circulatory system _ carries glucose and oxygen to the muscle cells
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When u exercise your breathing and pulse rate increase or decrease
Increase
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Describe the lungs
Diaphragm ribs intercostal muscles lungs windpipe
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Nerve cells are called
Neurones
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Describe how they work
Nerve impulses from the cell body travel through the axon then to the nerve ending then to the muscle
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Neutrons are part of the .............
Nervous system
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The system is made up of two parts
CNS and PNS
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what do CNS and PNS stand for
Central nervous system and perpheral nervous system
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The nervous system is made up of three things
Brain spinal cord and nerves
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Which of these are CNS
Brain and spinal cord
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Neutrons carry
Electrical signals called impulses
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The nervous system allows the body to respond to ...
Changes in the environment
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Why are they so fast
To keep us from hurting ourselves by acting automatically in the form of telexes
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Name the steps of how reflexes work
Pain receptor in finger - sensory neurone carries impulse to the spinal cord. -passes to spinal cord - motor neurone carries impulses from spinal cord to muscle - biceps muscle bends arm - lifting arm away from pain
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What is a receptor
They are cells which can detect a change in the environment and produce electrical impulses in response
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How can u measure fitness
Speed strength stammina suppleness
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What are recreational drugs
Legal drugs like caffeine have an affect on body
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What are illegal drugs
Heroin and ecstasy are illegal drugs they can be very harmful and affect your body dramatically
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What are depressants
They are drugs that slow down the nervous sytem that can also slown down Brian
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What are hallucinogen s
They alter what we see eg canaries and LSD
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What drug blocks nerve impulses
Pain killers
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What drug helps improve muscle development
Performance enhancer eg anabolic steroids
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What do caffeine and nictonine do
They increase the brain activity
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Can all drugs be addictive
Yes
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What is a drug
A chemical that alters the way our body works
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What effects can smoking have
Cancer , damage to cilia cells , blood clots , heart disease a loss of taste and smell ,build up of tar
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anerobic respiration is
when there isnt enough oxygen so they use
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Other cards in this set

Card 2

Front

What rigid tissue can support weight without bending

Back

Bones

Card 3

Front

What tissue contracts and relaxes to cause movement

Back

Preview of the front of card 3

Card 4

Front

Describe a tendons

Back

Preview of the front of card 4

Card 5

Front

What are between bones in. A joint

Back

Preview of the front of card 5
View more cards

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