Human Anatomy - Muscular System

Front

What is the primary function of the zygomaticus major muscle?

Back

The zygomaticus major muscle is primarily responsible for elevating the corners of the mouth, contributing to smiling.

Front

What is the scientific name for the muscle commonly referred to as the calf muscle?

Back

The scientific name for the calf muscle is Gastrocnemius.

Front

Which muscle group is primarily responsible for forearm rotation?

Back

The Brachioradialis muscle is primarily responsible for rotating the forearm.

Front

What is the main function of the deltoid muscle?

Back

The deltoid muscle's main function is to abduct the arm at the shoulder joint.

Front

Which muscle plays a crucial role in the process of breathing by expanding the chest cavity?

Back

The diaphragm muscle is essential for breathing as it expands the chest cavity.

Front

What is the role of the masseter muscle?

Back

The masseter muscle is responsible for elevating the mandible (jaw) and is a key muscle in chewing.

Front

Define the term 'antagonistic muscles'.

Back

Antagonistic muscles are pairs of muscles that work against each other to create movement; when one muscle contracts, the other relaxes.

Front

What is the function of the pectoralis major muscle?

Back

The pectoralis major muscle is responsible for flexing, adducting, and rotating the arm.

Front

What is the role of the biceps brachii muscle?

Back

The biceps brachii muscle primarily functions to flex the elbow and supinate the forearm.

Front

What is the function of the rectus abdominis muscle?

Back

The rectus abdominis muscle is responsible for flexing the lumbar spine and stabilizing the pelvis.