GCSE PE: MUSCLES
- Created by: Lauramartinn
- Created on: 21-06-18 19:02
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- Muscles
- Types of Muscles
- Involuntary (smooth muscle)
- located through the middle layer of blood vessels & found in the organs of the digestive, circulatory &urinary systems
- Muscles you don't have control over
- Expelling waste from body
- Cardiac
- not under conscious control
- Contracts & relaxes continuously
- Voluntary
- Muscles that you choose to use
- attach bones via tendons
- crucial to creating movement
- Involuntary (smooth muscle)
- Antagonistic pairs
- Agonist
- Agonist= contracting
- Agonist
- vascular shunting
- vascular = vessels
- Lumen = change size of diameter of blood vessels
- 80% of blood in body goes to brain, digesting food etc..
- 20% of blood in body goes to muscles but released when sitting down
- vasoconstruction = narrowing
- redistribution of blood
- process of blood being directed to muscles during exercise
- Muscle fibres
- Type 1
- low intensity activity
- slow twitch
- long distance
- work aerobically (long periods of time)
- dark red in colour
- use oxygen to release energy
- high fatigue resistance
- high aerobic capacity
- Type 11a
- high intensity activity
- fast twitch
- high speed & force of contraction
- 400m/800m
- train to become more endurance based
- pink/red in colour
- work anaerobically
- good strength & speed endurance
- Type 11x
- fast twitch
- low aerobic capacity
- work anaerobically
- low fatigue resistance
- high speed & force of contraction
- white in colour
- short sprint
- linked to high intensity activity
- Type 1
- Types of Muscles
- antagonistic = relaxing
- Antagonistic
- Antagonistic pairs
- Agonist
- Agonist= contracting
- Agonist
- Antagonistic pairs
- Antagonistic
- Two muscles that work together to bring about movement
- one muscle contacts whilst another muscle relaxes
- this allow the contracting muscle to pull on the tendon
- for example: bicep & tricep OR Quadriceps & Hamstring OR Hip flexors & gluteals OR Gastrocnemius & tibialis anterior
- this allow the contracting muscle to pull on the tendon
- one muscle contacts whilst another muscle relaxes
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