Muscle Quiz Flashcards
What is the Frontalis and where is it located? (HEAD)
The muscle responsible for elevating the eyebrows, located along the forehead (frontal bone), hence it’s name.
What are the Orbicular Oculi (O. Oculi) and where is it located? (HEAD, PAIRED)
The muscles responsible for controlling (closing) the eyelids, they are located under the eyelids (hence “oculi”) and have circle shape. They also help depress the frontalis.
What is the Zygomaticus and where is it located? (HEAD, PAIRED)
The muscle responsible for controlling the way we smile. It is located on the Zygomatic bones (cheekbones), hence it’s name.
What is the Buccinator and where is it located? (HEAD, PAIRED)
The muscle responsible for controlling the cheeks (hence “buccal”), working with the O. Oris to help swallowing, chewing, blowing, and sucking.
What is the Orbicular Oris (O. Oris) and where is it located? (HEAD)
The muscle responsible for controlling the lips to close the mouth and do other functions, also known as “the kissing muscle”. It has a circle shape around the lips.
What is the Temporalis and where is it located? (HEAD, PAIRED)
The muscle responsible for helping with closing the mouth and chewing, it is located along the sides of the temporal bones (hence “Temporalis”).
What is the Occipitalis and where is it located? (HEAD)
The muscle responsible for helping the Frontalis in creating facial expressions through contracting the scalp. It is located on the occipital bone at the back of the head (hence “Occipitalis”)
What is the Masseter and where is it located? (HEAD, PAIRED)
The muscle responsible for assisting with chewing, having two connections between the Cheekbones to the Mandible (4 total)
What is the Sternocleidomastoid (SCM) and where is it located? (HEAD/NECK, PAIRED)
The muscle responsible for tilting the head and turning the neck, with other movements. It is superficial and posterior in the head and neck.
What is the Trapezius and where is it located? (NECK/BACK, PAIRED)
The muscle responsible for helping head, neck, arm, and torso movements while also stabilizing the spine with posture. It resembles a trapezoid (hence “Trapezius”) and goes from the Occipital bone to shoulders to the middle of the back.
What is the Platysma and where is it located? (NECK, PAIRED)
The muscle responsible for lowering part of the mouth down, creasing skin in the lower face. It goes over the Trapezius, starting at the chin. It also forms the front of the neck.
What is the Cranial Aponeurosis and where is it located? (HEAD)
The fibrous connective tissue that forms the middle (3rd) layer of the skull, located at and covering the upper part of the cranium (hence “Cranial”).
What is the Deltoid and where is it located? (SHOULDER, PAIRED)
The muscle responsible for helping in moving the arms in different directions on a 3 dimensional plane. It is attached to the shoulder, also helping to protect and stabilize it.
What is the Pectoralis Major and where is it located? (CHEST, PAIRED)
The muscle responsible for adducting and flexing the Humerus, also known as the “pecs” in males (hence “Pectoralis”)
What are the Biceps Brachii and where are they located? (ARM, PAIRED)
Better known as the biceps, these muscles are responsible for helping flex and supinate the forearm. They are located right before the forearm, being the biceps.
What are the Brachialis and where are they located? (ARM, PAIRED)
The muscles responsible for flexing the elbows, these muscles are connected to both sides of the Biceps Brachii, being quite small.
What are Brachioradials and where are they located? (ARM, PAIRED)
The muscles responsible in helping with flexion, supination, and pronation of the forearm (depending on the forearm’s rotation). They are located at the base of the forearms, at the very bottom of the arm diagram.
What are External Intercoastal muscles and what do they do? (CHEST, PAIRED (22))
The muscles responsible for raising the rib cage during inhalation to assist with breathing. They are located externally (hence External) between the ribs of the ribcage (Hence Intercoastal)
What are Internal Intercoastal muscles and what do they do? (CHEST, PAIRED (22))
The muscles responsible for depressing the rib cage during forced exhalation to assist with moving air out of the lungs. They are located internally (hence Internal) between the ribs of the ribcage (Hence Intercoastal)
What is the Rectus Abdominis and where is it located? (TRUNK, PAIRED (6))
The muscles responsible for moving the body between the ribcage and pelvis. They are better known as the 6 pack, being muscle bumps that go straight up (hence “Rectus”)
What is the Transversus Abdominis and where is it located? (TRUNK)
The muscle responsible for stabilizing the Trunk or abdomen (hence “Abdominis) and maintaining abdominal pressure internally. It is superficially located under the Internal Oblique.
What are the Internal Obliques and where are they located? (TRUNK, PAIRED)
The muscles responsible for assisting in flexing/bending the Trunk, defecation, depressing the lower ribs, and childbirth. They are located superficial to the External Obliques and found on the very lateral abdomen walls.
What are the External Obliques and where are they located? (TRUNK, PAIRED)
The muscles responsible for assisting in rotating the trunk and pulling the chest downwards. They are located directly above the Internal Obliques and found on the very lateral abdomen walls, surrounding the abdomen.
What is Aponeurosis and where is it located?
The thin sheath of connective tissue that helps connect bones to muscles, it can be found near the pelvis and has a white color on the Trunk diagram.
What is the origin, insertion, and action of the Pectoralis Major?
Origin: Sternum, Clavicle, and Ribs 1-6
Insertion: Humerus
Action: Adducts and Flexes Humerus
What is the origin, insertion, and action of the Rectus Abdominis?
Origin: Pubis
Insertion: Sternum, Ribs 5-7
Action: Flexion of the Vertebral Column
What is the origin, insertion, and action of the External Obliques?
Origin: Lower 8 Ribs
Insertion: Ilium
Action: Flexion and Rotation of the Vertebral Column
What is the origin, insertion, and action of the Trapezius?
Origin: Occipital Bone
Insertion: Scapula Clavicle
Action: Extends neck and adducts Scapula
What is the origin, insertion, and action of the Latissimus Dorsi?
Origin: Lower spine/Ilium
Insertion: Humerus
Action: Extends and Adducts Humerus
What is the origin, insertion, and action of the Erector Spinae?
Origin: Ilium/Sacrum
Insertion: Ribs, Thoracic and Cervical Vertebrae
Action: Extends Vertebral Column
What is the origin, insertion, and action of the Deltoid?
Origin: Scapula/Clavicle
Insertion: Humerus
Action: Abduction of the Humerus
What is the Latissimus Dorsi (LATS) and where is it located? (BACK, PAIRED)
The muscle responsible for extension and abduction of the arms, along with medial rotation of shoulder joints. It is located directly under the Trapezius and is broad and flat.
What are the Erector Spinae and where are they located? (BACK, PAIRED)
The muscles that are responsible for assisting in straightening the back, along with side-to-side rotation. They run along the spine, covering it as well being long and not thick.
