Muscle Identification flashcard

Front

What is the function of the gluteus medius muscle?

Back

The gluteus medius muscle is primarily responsible for the abduction of the thigh and stabilization of the pelvis during walking.

Front

Where is the zygomaticus muscle located and what is its function?

Back

The zygomaticus muscle is located in the face and is responsible for elevating the corners of the mouth, contributing to smiling.

Front

What are the primary functions of the trapezius muscle?

Back

The trapezius muscle is responsible for moving, rotating, and stabilizing the shoulder blade (scapula) and extending the neck.

Front

Describe the sartorius muscle and its role in the body.

Back

The sartorius muscle is the longest muscle in the human body, running from the hip to the knee. It helps in flexing, abducting, and laterally rotating the thigh.

Front

What is the rectus femoris muscle and where is it located?

Back

The rectus femoris is one of the four quadriceps muscles located in the front of the thigh. It is involved in knee extension and hip flexion.

Front

What are the major muscle groups in the human body?

Back

The major muscle groups include the upper body (chest, back, shoulders, arms), core (abdominals, obliques), and lower body (quadriceps, hamstrings, calves, glutes).

Front

How do muscles work in pairs during movement?

Back

Muscles work in pairs through antagonistic action, where one muscle contracts (agonist) while the other relaxes (antagonist) to facilitate movement.

Front

What is the role of skeletal muscles in the body?

Back

Skeletal muscles are responsible for voluntary movements, maintaining posture, and producing heat through muscle contractions.

Front

Explain the difference between fast-twitch and slow-twitch muscle fibers.

Back

Fast-twitch fibers are designed for explosive strength and speed, while slow-twitch fibers are more endurance-oriented, supporting prolonged activities.

Front

What is muscle hypertrophy and how does it occur?

Back

Muscle hypertrophy is the increase in muscle size due to resistance training, which causes micro-tears in muscle fibers that repair and grow stronger.