This type of muscle contraction occurs when the muscle shortens while producing force, like lifting a weight.
Answer: What is isotonic contraction?
This large, fan-shaped chest muscle is responsible for flexion, adduction, and medial rotation of the arm.
Answer: What is the pectoralis major?
This four-muscle group on the anterior thigh is responsible for knee extension.
Quadriceps
This large muscle on the anterior upper arm flexes the elbow and is commonly associated with “showing your muscles.”
Answer: What is the biceps brachii?
Jacob Elordi

This term describes muscles that work opposite each other, like the biceps and triceps.
Answer: What are antagonistic muscles?
This smaller muscle lies deep to the pectoralis major and helps stabilize the scapula.
Answer: What is the pectoralis minor?
This hamstring muscle shares its name with a muscle in the arm and helps flex the knee.
What is the biceps femoris?
This muscle on the posterior upper arm is responsible for elbow extension.
Answer: What is the triceps brachii?
This type of muscle tissue is non-striated, involuntary, and found in organs such as the stomach and intestines.
Answer: What is smooth muscle?
These tiny structures inside a muscle fiber store calcium, which is necessary for muscle contraction.
Answer: What are the sarcoplasmic reticulum?
Diddy Kong is the know as this other monkey's sidekick.
Donkey Kong

This muscle on the front of the lower leg dorsiflexes the foot and is commonly sore after long walks or runs.
What is the tibialis anterior?
Located deep to the biceps brachii, this muscle is actually the primary muscle responsible for elbow flexion.
Answer: What is the brachialis?
This type of muscle tissue is found only in the walls of the heart and contains intercalated discs.
Answer: What is cardiac muscle?
This person hosted a TV show.
Ellen Degeneres
These muscles are located between the ribs and assist with breathing by elevating the rib cage during inhalation.
Answer: What are the external intercostals?
This tendon is responsible for flexion of the plantar muscles.
Achilles
In this movie franchise, a group of teens survives an evil clown terrorizing their town every 27 years.

IT
This functional unit of a muscle fiber contains actin and myosin filaments and shortens during contraction.
Answer: What is a sarcomere?
This connective tissue surrounds individual muscle fibers and helps transmit force to the tendon.
Answer: What is endomysium?
These muscles assist in forced exhalation by pulling the ribs downward and are located deep to the external intercostals.
Answer: What are the internal intercostals?
The new Frankenstien features this actor who starred in all three of the newest Star Wars Trilogy.

Oscar Isaac
This large, triangular shoulder muscle allows for arm abduction and gives the shoulder its rounded shape.
Answer: What is the deltoid?
This chemical messenger is released from a motor neuron to stimulate a muscle fiber to contract.
Answer: What is acetylcholine?
This protein can accelerate uptake of ATP in muscles
Creatine
Abdominal muscles connect to this bone at the lower end.
Ischium
This long, strap-like muscle is the longest muscle in the human body and helps flex, abduct, and laterally rotate the thigh.
Answer: What is the sartorius?
This injury caused by repeated use of the lateral epicondyle is commonly found players of this sport.
Tennis (Tennis elbow)

This is a genetic disorder that affects your muscle development is caused by gene mutations affecting protein production (e.g., dystrophin), it leads to mobility issues, breathing/swallowing difficulties, and heart problems.
Muscular Dystrophy
This process describes how muscles produce energy for contraction using oxygen when it is available.
Answer: What is aerobic respiration?
This dome-shaped muscle separates the thoracic cavity from the abdominal cavity and is the primary muscle of respiration.
Answer: What is the diaphragm?
This powerful calf muscle crosses both the knee and ankle joints and gives the calf its rounded shape.
Answer: What is the gastrocnemius?
This forearm muscle helps flex the elbow and is most visible when the forearm is in a neutral (thumbs-up) position.
Answer: What is the brachioradialis?
This type of muscle tissue is voluntary, striated, and attached to bones.
Answer: What is skeletal muscle?