Muscles in Action
What are the 3 functions of the muscular system?
Movement, Stabilisation and temperature control
Skeletal, Cardiac and Smooth
Where is the rectus abdominous located?
Abdominal area
Muscles can only shorten. The muscle that lengthens during a movement is known as what?
Antagonist
Which muscle causes extension of the arm?
The tricep
This muscle, heavily involved in a baseball pitcher's throwing motion, contracts to rotate and stabilize the shoulder during the wind-up and release.
Deltoid
What is the only type of voluntary muscle?
The skeletal muscle
Where is the quadriceps located?
Upper leg
Explain antagonist muscles?
Antagonist muscles are pairs of muscles that work in opposition to each other. When one muscle contracts, its counterpart relaxes to allow movement.
Which muscle extends(straightens) your leg?
The quadriceps
In weightlifting, this muscle group, located on the back of the thigh, contracts to straighten the leg during the upward phase of a squat or deadlift.
Hamstring
Type of muscle that contracts blood vessels to push blood through the circulatory system.
Smooth Muscle
Where is the deltoid located?
Give an example of a pair of antagonist muscles in the arm and describe their opposing actions.
An example of a pair of antagonist muscles is the biceps and triceps. The biceps are responsible for flexing the elbow, while the triceps are responsible for extending it.
When a muscle gets shorter, what type of movement happens?
Contraction
During a basketball jump shot, this muscle, located on the back of the lower leg, contracts to push the body off the ground, aiding in propulsion and lift.
Gastrocnemius
What are muscles made up of?
muscle fibers, connective tissue, blood vessels, and nerves
Where is the trapezius located?
Between the shoulder and the neck
How do antagonist muscles work together to maintain balance and coordination during movement?
Antagonist muscles work together to maintain balance and coordination by providing smooth and controlled movements. When one muscle contracts, its antagonist relaxes, allowing for precise movement without resistance.
In weightlifting, what type of muscle contraction occurs when an athlete holds a static position, such as maintaining a plank or holding a squat halfway down?
Isometric contraction occurs when an athlete holds a static position, such as maintaining a plank or holding a squat halfway down.
Engaging primarily during the upward phase of a sit-up, this muscle group, located in the abdomen, contracts to flex the spine and bring the torso towards the knees.
Adbominals
What type of muscle tissue is found in the walls of blood vessels and hollow organs like the stomach and bladder, responsible for involuntary movements, and what is it called?
Smooth
Where is the biceps brachii located?
Front of the upper arm
In a volleyball overarm serve, which muscles act as the primary agonists during the arm swing, and what are their antagonist muscles that provide the opposing action?
In a volleyball overarm serve, the primary agonist muscles during the arm swing are the deltoid muscles, particularly the anterior deltoid, which helps to lift the arm overhead. The triceps brachii acts as the antagonist muscle, providing the opposing action by extending the elbow during the follow-through phase of the serve.
What muscles are involved in the eccentric motion of a free throw in basketball?
Deltoids, Triceps, Biceps and Pectoralis Major