Muscles of the Upper Lip, Back, and Buttocks Anatomy Quiz

Study Notes

Muscles of the Face

The zygomaticus major muscle elevates the angle of the mouth and exposes the maxillary teeth.
The buccinator muscle compresses the cheek and raises the jaw.

Muscles of the Back and Buttocks

The trapezius muscle extends the head and scapula, and raises the scapula.
The levator scapula muscle retracts the scapula.
The rhomboid muscle retracts the scapula.
The erector spinae muscle maintains the erect posture of the vertebral column.
The gluteus medius muscle abducts the thigh and medially rotates it.
The gluteus maximus muscle extends the hip joint.

Muscles of the Thorax and Abdomen

The pectoralis major muscle controls the movement of the arms, adducts and medially rotates the arm, depresses the scapula, and protracts the scapula.
The pectoralis minor muscle compresses the abdomen.
The serratus anterior muscle compresses the abdomen.
The external abdominal obliques muscle compresses the abdomen.
The internal abdominal obliques muscle compresses the abdomen.
The rectus abdominis muscle compresses the abdomen.
The transverse abdominal muscle compresses the abdomen.
The scalene muscle raises the ribs and expands the thorax.
The external intercostal muscle expands the thorax.

Muscles of the Arm

The deltoid muscle abducts the arm.
The biceps brachii muscle flexes the elbow and supinates the arm.
The brachialis muscle flexes the elbow.
The brachioradialis muscle flexes the arm.
The supraspinatus muscle extends the shoulder.
The infraspinatus muscle rotates the arm.

Muscles of the Thigh (Anterior)

The iliopsoas muscle flexes the hip.
The sartorius muscle flexes the thigh and laterally rotates it.
The quadriceps femoris muscle extends the knee.
The rectus femoris muscle extends the knee.
The vastus lateralis muscle extends the knee.
The vastus intermedius muscle extends the knee.
The vastus medialis muscle extends the knee.

Muscles of the Leg

The gastrocnemius muscle plantar flexes the foot.
The soleus muscle plantar flexes the foot.
The peroneus/fibularis muscle plantar flexes and everts the foot.
The tibialis anterior muscle dorsiflexes the foot and inverts the foot.

Muscles of the Thigh (Posterior)

The hamstrings muscle (biceps femoris, semitendinosus, and semimembranosus) extends the thigh and flexes the knee.

Muscles of the Pelvic Floor and Perineum

The levator ani muscle constricts the anus, urethra, and vagina.
The ischiocavernosus muscle resists increased erection.
The bulbospongiosus muscle aids in urine and semen expulsion.

Muscular System

Major organs and structures: muscles.
Accessory structures: tendons.
Functions: movement, maintain posture, respiration, production of body heat, communication, heart beat, and contraction of organs and vessels.

Properties of Muscles

Control: voluntary or involuntary.
Location: skeletal or cardiac.
Striated or non-striated.

Anatomical Terms

Intrinsic muscle: origin and insertion located in the same body region.
Extrinsic muscle: origin in a different body region and insertion.
Fixator: holds an origin stable for another muscle.
Synergists: muscles with the same action.
Prime mover: main muscle of the synergists.
Antagonist: muscle with an opposing action.

Muscle Actions

Flexion: bends a part of the body anteriorly.
Extension: bends a part of the body posteriorly.
Abduction: moves a part of the body away from the midline.
Adduction: moves a part of the body towards the midline.
Protraction: brings a part of the body forward.
Retraction: brings a part of the body backward.
Circumduction: makes a circle with part of the body.
Lateral excursion: moves the jaw laterally to either side.
Medial excursion: moves the jaw medially.

Description

Test your knowledge of the muscles responsible for specific movements in the upper lip, back, and buttocks. Identify muscles like Trapezius, Erector spinae, Gluteus medius, and more based on their functions.