Questions and Answers
The muscle that draws the scalp backward is called the ______.
Occipitalis
The ______ muscle elevates the eyebrows and wrinkles the skin of the forehead.
Frontalis
The muscle that compresses the cheek is known as the ______.
Buccinator
The muscle responsible for raising the upper lip is called the ______.
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The muscle that closes the lips is known as ______.
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The ______ muscle pulls the angle of the mouth upward and backward when laughing.
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The muscle that flexes the vertebral column and rotates the head is called the ______.
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The muscle that rolls the eyeball upward is known as the ______.
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The ______ elevates and retracts the scapula.
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The ______ moves the scapula forward away from the spine.
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The ______ flexes, adducts, and rotates the arm medially.
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The ______ adducts and extends the arm, rotating it medially.
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The ______ abducts the arm.
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The ______ rotates the humerus outward.
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The ______ flexes and adducts the arm.
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The ______ draws the head to one side and rotates the scapula.
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The ______ oblique compresses abdominal contents.
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The ______ abdominis flexes the vertebral column.
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The diaphragm increases the vertical diameter of the ______.
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The ______ intercostals draw adjacent ribs together.
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The ______ major flexes and rotates the thigh medially.
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The gluteus maximus flexes and rotates the thigh ______.
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The ______ lumborum flexes the trunk laterally.
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The iliacus works in conjunction with the psoas to flex the ______ medially.
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The ______ brachii extends and adducts the forearm.
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The ______ flexes the forearm.
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The ______ carpi radialis flexes and abducts the wrist.
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The ______ muscle abducts the thumb.
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The ______ digitorum extends the index finger.
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The ______ abductor minimi abducts the little finger.
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The ______ palmaris tenses the palm of the hand.
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The ______ quadratus pronates the forearm.
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The gluteus minimus muscle abducts and rotates the thigh medially, originating from the _____ and attaching to the femur.
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The tensor fascia lata tenses the ______ and assists in stabilizing the hip.
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The adductor magnus primarily functions to adduct and extend the thigh, originating from the ischium and ishiopubic ______.
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The quadriceps femoris group extends the leg and flexes the thigh, with the rectus femoris flexing the thigh at the ______ joint.
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The gastrocnemius muscle is responsible for plantar flexing the foot and also flexes the ______.
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The vastus lateralis muscle extends the lower leg and helps the body rise up from a ______ position.
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The peroneus longus muscle everts and plantar flexes the foot, while the tibialis anterior ______ flexes the foot.
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The ______ is a muscle that flexes the leg and rotates it laterally after being flexed.
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Study Notes
Muscles of Facial Expression
- Occipitalis: Draws scalp backward.
- Frontalis: Elevates eyebrows and wrinkles forehead skin.
- Zygomaticus Minor: Draws upper lip upward and outward.
- Levator labii superioris: Elevates the upper lip and dilates the nostril.
- Buccinator: Compresses cheek and retracts the angle of the mouth.
- Zygomaticus Major: Pulls mouth angle upward and backward during laughter.
- Mentalis: Raises and protrudes lower lip, as when in doubt.
- Orbicularis Oris: Closes lips.
- Risorius: Known as the “smiling” muscle.
Muscles of Mastication
- Masseter: Closes the jaw.
- Temporalis: Raises mandible, closes mouth, and draws mandible backward.
- Medial Pterygoid: Raises the mandible and closes the mouth.
- Lateral Pterygoid: Brings jaw forward.
Muscles of the Eye
- Superior Rectus: Rolls eyeball upward.
- Inferior Rectus: Rolls eyeball downward.
- Medial Rectus: Rolls eyeball medially.
- Lateral Rectus: Rolls eyeball laterally.
- Superior Oblique: Rotates eyeball on axis.
- Inferior Oblique: Rotates eyeball on axis.
Muscles of the Head
- Sternocleidomastoid: Flexes vertebral column and rotates the head.
Muscles Moving the Shoulder Girdle
- Levator: Flexes vertebral column and rotates the head.
- Rhomboid Major: Moves scapula backward and upward; slight rotation.
- Rhomboid Minor: Elevates and retracts the scapula.
- Pectoralis Minor: Depresses shoulder and rotates scapula downward.
- Trapezius: Draws head to one side and rotates the scapula.
- Serratus Anterior: Moves scapula forward away from the spine.
Muscles Moving the Humerus
- Coracobrachialis: Flexes and adducts the arm.
- Pectoralis Major: Flexes, adducts, and medially rotates the arm.
- Teres Major: Adducts, extends, and medially rotates the arm.
- Teres Minor: Laterally rotates and adducts the arm.
- Deltoid: Abducts the arm.
- Supraspinatus: Abducts the arm.
- Infraspinatus: Rotates the humerus outward.
- Latissimus Dorsi: Extends, adducts, and rotates arm medially.
Muscles Moving the Elbow
- Brachialis: Flexes forearm.
- Triceps Brachii: Extends and adducts the forearm.
- Biceps Brachii: Flexes arm and forearm; supinates hand.
- Anconeus: Extends forearm.
- Brachioradialis: Flexes forearm.
Muscles Moving the Wrist
- Flexor Carpi Radialis: Flexes and abducts the wrist.
- Flexor Carpi Ulnaris: Flexes and adducts the wrist.
- Extensors: Extended muscles include Radialis Brevis, Radialis Longus, and Ulnaris which extend and/or abduct/adduct the wrist.
- Palmaris Longus: Flexes the wrist.
Muscles Moving the Hand, Thumb, and Fingers
- Supinator: Supinates the forearm.
- Pronator Teres & Quadratus: Pronates the forearm.
- Flexor Pollicis Longus/Brevis: Flexes the thumb.
- Extensor Pollicis Longus/Brevis: Extends the thumb.
- Adductor Pollicis: Adducts the thumb.
- Interossei: Control finger movements (abduction and adduction).
Muscles of the Abdominal Wall
- External Oblique: Compresses abdominal contents.
- Internal Oblique: Compresses abdominal contents.
- Transversus Abdominis: Compresses abdominal contents.
- Rectus Abdominis: Flexes the vertebral column; assists in compressing the abdominal wall.
Muscles of Respiration
- Diaphragm: Increases vertical diameter of thorax.
- External Intercostals: Draws adjacent ribs together.
- Internal Intercostals: Draws adjacent ribs together.
- Quadratus Lumborum: Flexes trunk laterally.
Muscles Moving the Femur
- Psoas Major: Flexes and rotates thigh medially.
- Gluteus Maximus: Flexes and laterally rotates thigh.
- Gluteus Medius & Minimus: Abducts and medially rotates thigh.
- Tensor Fascia Lata: Tenses fascia lata.
- Adductor Group: Includes Brevis, Longus, and Magnus for adducting and rotating the thigh.
Muscles Moving the Knee Joint
- Biceps Femoris: Flexes leg and rotates laterally.
- Semitendinosus & Semimembranosus: Flex leg and extend thigh.
- Quadriceps Femoris Group: Extends leg (includes Rectus Femoris, Vastus Lateralis, Medialis, Intermedius).
Muscles Moving the Foot and Toes
- Gastrocnemius & Soleus: Plantar flex the foot.
- Tibialis Anterior: Dorsally flexes the foot.
- Peroneus Muscles: Evert and plantar flex the foot.
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Description
Test your knowledge on the muscles of the face and scalp with this quiz. You'll identify various muscles responsible for movements like raising eyebrows and smiling. Perfect for students of anatomy or anyone interested in human biology.
