Questions and Answers
What is the term for the muscle that helps in compressing the cheek?
Which muscle elevates the scapula?
What is the name of the muscle that is responsible for jaw closure?
Masseter Muscle
Name one muscle that closes the eye.
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Name one muscle involved in puckering the lips.
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What is one bone from which the Sternocleidomastoid originates?
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What muscle is known for being the main muscle of facial expression?
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What muscle is responsible for raising the arm?
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What is the action of the gluteus minimus?
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What bone does the Infraspinatus muscle insert onto?
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From which two bones does the Masseter indirectly originate?
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What action does the internal oblique muscle perform?
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What is the action of the highlighted muscle that flexes the leg at the knee?
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What bone does the biceps brachii muscle originate from?
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What action is performed by the flexor carpi ulnaris muscle?
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What common structure does the highlighted muscle insert onto?
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Which structure is highlighted that is associated with the iliacus muscle?
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Study Notes
Buccinator Muscle
- A thin, flat muscle located in the cheek area.
- Responsible for compressing the cheeks against the teeth during chewing.
Levator Scapulae
- Connects the cervical vertebrae to the scapula.
- Elevates the scapula and assists in neck movement.
Masseter Muscle
- Major muscle involved in mastication (chewing).
- Located in the jaw, it elevates the mandible to close the mouth.
Orbicularis Oculi
- Circular muscle around the eye.
- Functions to close the eyelids, aiding in blinking and squinting.
Orbicularis Oris
- Circular muscle surrounding the mouth.
- Responsible for movements such as puckering and closing the lips.
Sternocleidomastoid
- Stretches from the sternum and clavicle to the mastoid process of the skull.
- Facilitates head rotation and flexes the neck.
Bones of Muscle Origin
- Muscles may originate from the manubrium, clavicle, or sternum, depending on the muscle.
Zygomatic Major
- Located in the cheek, it elevates the corners of the mouth.
- Plays a key role in smiling and facial expressions.
Epicranius (Frontal Belly)
- Covers the frontal bone and consists of the frontal and occipital bellies.
- Responsible for raising the eyebrows and wrinkling the forehead.
Humerus
- Many muscles insert into this bone, particularly those of the upper arm.
Mandible and Maxilla
- Key bones providing origin for several facial muscles, providing structure to the jaw.
Temporalis
- A muscle that helps in closing the jaw, located above the ear.
Deltoid
- A large muscle covering the shoulder joint.
- Responsible for arm abduction, flexion, and extension.
Gluteus Minimus
- Located beneath the gluteus medius.
- Assists in hip abduction and medially rotates the thigh.
Infraspinatus
- Part of the rotator cuff, crucial for shoulder stability.
- Primarily responsible for the external rotation of the arm.
Costal Cartilage
- Connective tissue that attaches ribs to the sternum, providing elasticity to the ribcage.
Internal Oblique
- Muscle situated on each side of the abdomen.
- Involved in trunk rotation and lateral flexion.
Latissimus Dorsi
- Large muscle in the back that extends to the humerus.
- Functions in arm adduction and extension.
Longissimus
- Part of the erector spinae group responsible for extending the vertebral column.
Pectoralis Minor
- A smaller pectoral muscle that assists in shoulder movement and stabilization.
Serratus Anterior
- Located on the side of the chest; crucial for scapular protraction and rotation.
Spinous Process
- A prominent bony structure on vertebrae, serving as an attachment point for muscles.
Supraspinatus
- Another rotator cuff muscle, located above the scapula.
- Aids in shoulder abduction and stability.
Teres Major
- Located beneath the teres minor; assists in shoulder movements.
Flexion of Arm at Shoulder
- An action performed by several muscles that bend the arm at the shoulder joint.
External Intercostal
- Muscles between the ribs that elevate the rib cage during breathing.
External Oblique
- The largest muscle on the side of the abdomen; aids in trunk rotation.
Gluteus Maximus
- The largest gluteal muscle; responsible for hip extension and lateral rotation.
Gluteus Medius
- Located underneath the gluteus maximus; involved in hip stabilization and abduction.
Iliacus
- Muscle of the hip that helps flex the thigh and stabilize the pelvis.
Iliotibial Tract
- A thick band of fascia running along the outer thigh, providing stability to the knee.
Semitendinosus
- Part of the hamstring group; assists in flexing the knee and extending the hip.
Tensor Fasciae Latae
- Muscle located on the outer thigh; helps in hip flexion and abduction.
Vastus Lateralis
- Largest of the quadriceps muscles; extends the knee.
Vastus Medialis
- Another quadriceps muscle responsible for knee extension, located on the inner thigh.
Adductor Longus
- A thigh muscle responsible for adducting the thigh and aiding in hip movement.
Biceps Femoris
- Part of the hamstring group; assists in knee flexion and hip extension.
Gastrocnemius
- Major calf muscle; involved in plantarflexion of the foot.
Gracilis
- Thin muscle along the inner thigh, involved in thigh adduction.
Flexor Carpi Radialis
- A wrist muscle involved in flexion and radial deviation of the hand.
Triceps Brachii
- Major muscle of the back of the arm; responsible for elbow extension.
Palmaris Longus
- A muscle that contributes to wrist flexion and is absent in some individuals.
Pronation Teres
- Muscle involved in forearm pronation and flexion at the elbow.
Brachialis
- Lies beneath the biceps; crucial for elbow flexion.
Extensor Carpi Ulnaris
- A muscle that aids in wrist extension and ulnar deviation.
Flexor Digitorum Longus
- Responsible for flexing the toes and aiding in foot movement.
Vastus Intermedius
- Also part of the quadriceps group, located beneath the rectus femoris, aiding in knee extension.
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Description
Test your knowledge of various muscles with these flashcards. This quiz covers important muscles such as the buccinator and masseter, as well as bones related to muscle attachment. Perfect for students in anatomy or physical education!
