6.5B Quizizz: Gross Anatomy of Skeletal Muscle: Trunk Muscle

The prime mover of arm abduction is the ________ muscle.

• trapezius

• deltoid

• triceps brachii

• biceps brachii

Which muscle helps compress the abdominal contents during defecation or childbirth?

• internal intercostals

• deltoids

• trapezius

• iliopsoas

• rectus abdominis

Which of these muscles is located on the ventral (anterior) side of the body?

• pectoralis major

• occipitalis

• gastrocnemius

• gluteus medius

• latissimus dorsi

Which of the following consists of two large, flat muscles that cover the lower back?

• deltoid

• biceps brachii

• triceps brachii

• latissimus dorsi

• pectoralis major

The deepest muscle of the abdominal wall is the transversus abdominis.

• TRUE

• FALSE

The deltoid muscle is a common site for intramuscular injections.

• TRUE

• FALSE