Muscle Anatomy
This is the largest muscle in the human body, located in the posterior thigh
What is the gluteus maximus?
This is the primary function of the deltoid muscle, located in the shoulder.
What is abduction of the arm at the shoulder joint?
This genetic disorder is characterized by progressive weakness and loss of muscle mass.
What is muscular dystrophy?
This molecule is essential for muscle contraction and is released from the sarcoplasmic reticulum.
What is calcium?
This type of exercise, involving contraction without changing the muscle length, strengthens muscles without movement.
What is isometric exercise?
This pair of muscles, located on the front of the thigh, extends the leg at the knee.
What are the quadriceps?
This muscle, one of the strongest in the body, primarily functions in extending the leg at the knee.
What is the quadriceps femoris?
This condition, often associated with overuse or muscle injury, is characterized by painful involuntary muscle contractions.
What are muscle cramps or spasms?
This is the fundamental unit of a muscle's contraction, found within muscle fibers.
What is a sarcomere?
This term refers to the increase in muscle size typically observed after strength training.
What is hypertrophy?
Found in the upper arm, this muscle is known for its prominent bulge when the arm is flexed.
What is the biceps brachii?
This is the main function of the rectus abdominis muscle, commonly known as the 'abs'.
What is flexion of the lumbar spine?
This chronic autoimmune disease causes weakness in the skeletal muscles, often affecting the muscles controlling the eyes and eyelids.
What is myasthenia gravis?
This protein, along with actin, plays a key role in muscle contraction by forming cross-bridges.
What is myosin?
These fibers in skeletal muscles are known for their endurance and efficiency in using oxygen.
What are Type I fibers, or slow-twitch fibers?
This broad, flat muscle in the lower back helps in movements such as twisting and bending.
What is the latissimus dorsi?
These muscles, found in the inner thigh, are primarily responsible for adducting the thigh.
What are the adductor muscles?
This common condition, often a result of stress or tension, is characterized by tight muscle knots that can be painful to touch.
What is a trigger point or myofascial pain syndrome?
This process describes the shortening of a muscle when its fibers contract.
What is muscle contraction or muscle fiber shortening?
This term describes the soreness felt in muscles a day or two after intense exercise, often after novel activity.
What is delayed onset muscle soreness (DOMS)?
These muscles, located on either side of the neck, are responsible for rotating and flexing the head.
What are the sternocleidomastoid muscles?
This is the primary action of the trapezius muscle, located in the upper back and neck.
What is elevation, depression, and rotation of the scapula?
This disorder is characterized by pain and tenderness in specific areas of the body, commonly in the neck, shoulders, and back.
What is tension myositis syndrome (TMS) or stress-related muscular pain?
This is the name of the theory that explains how muscles contract by the sliding of actin and myosin filaments.
What is the sliding filament theory?
This type of stretching involves holding a stretch in a challenging but comfortable position for a period of time.
What is static stretching?
This calf muscle is known for its strength and is crucial for activities like jumping and running.
What is the gastrocnemius?
This forearm muscle is mainly responsible for flexing the wrist and fingers.
What is the flexor carpi radialis?
This term describes a group of conditions that cause pain in the muscles, as well as fatigue and sleep problems.
What is fibromyalgia?
This energy-rich molecule provides the energy necessary for muscle contractions.
What is ATP (adenosine triphosphate)?
This type of muscle contraction occurs when a muscle shortens as it exerts force, commonly seen in weight lifting.
What is concentric contraction?