Muscular System

Question 1

Deltoid

Answer 1

-Abducts upper arm
-Lifts arm above head
-(eg) Tennis Serve

Question 2

Trapezius

Answer 2

-Attached to neck at top and shoulder below
-Lifts + braces shoulder (abduction)
-Rotates the shoulder blade
-(eg) Rowing/Tennis Serve

Question 3

Pectorals

Answer 3

-Covers the chest
-Draws arm forwards, rotates inwards (abduct arm)
-(eg) Butterfly

Question 4

Latissimus Dorsi

Answer 4

-Broad sheet of muscle extending from lower spine to humerus
-Abducts arm and draws it forwards and rotates inwards
-(eg) Breaststroke or Front Crawl

Question 5

Biceps

Answer 5

-Found at front of upper arm
-Contracts during elbow flexion (involved in throwing)
-(eg) Javelin

Question 6

Triceps

Answer 6

-Found at back of upper arm
-Works in harmony with bicep
-Contracts during elbow extension (throwing action)
-(eg) Netball shot

Question 7

Abdominals

Answer 7

-Holds stomach in
-Causes flexion + rotates at trunk and hip
-Helps good posture
-(eg) Line-out in Rugby

Question 8

Gluteals

Answer 8

-Form the buttocks
-Attached to femur
-Pulls leg backwards (extension at hip)
-(eg) Squats

Question 9

Quadriceps

Answer 9

-Found at front of upper leg
-Group of 4 muscles
-Extension at the knee
-(eg) Kicking action; Football

Question 10

Hamstrings

Answer 10

-Found on back of leg
-Stretch from pelvis to tibia
-Flexion in the knee
-(eg)Sprinting

Question 11

Gastrocnemius

Answer 11

-Part of calf muscle
-Comes together to form Achilles tendon
-Used to point toes (plantar flexion)
-(eg) High jump approach

Question 12

Antagonistic Pair

Answer 12

-One muscle contracts (shortens) whilst the other relaxes
-Contracting muscle is the Agonist
-Relaxing muscle is the Antagonist
-Muscles pull on tendons by contracting

Question 13

Fixator

Answer 13

Muscle that works to stabilise the origin of the Prime Mover (Agonist)