Muscle lab flashcards

What muscle is in the highlighted region?

Masseter

What is the red-lighted region, is it an origin/insertion, and for what muscle?

Zygomatic arch, Origin of the Masseter

What is the blue-lighted region, is it an origin/insertion, and for what muscle?

Mandibular angle, Insertion for the Masseter

What muscle is being depicted, and what is its action?

The Masseter, to Elevate the Mandible

What muscle is being highlighted?

The temporalis

What is the red-lighted region, is it an origin/insertion, and for what muscle?

Temporal Fossa, Origin of the Temporalis

What is the blue-lighted region, is it an origin/insertion, and for what muscle?

Coronoid Process, Insertion of the Temporalis

What muscle is being depicted, and what is its action?

The Temporalis, to Elevate and Retract the Mandible

In the highlighted region, what is the muscle? What is its innervation?

Sternocleidomastoid; Accessory nerve, C2 and C3

What is the red-lighted region, is it an origin/insertion, and for what muscle?

The manubrium & sternal end of clavicle, origin of the sternocleidomastoid.

What is the blue arrow pointing to? Is it an origin/insertion, and for what muscle?

The mastoid process, the insertion for the sternocleidomastoid

What muscle is being depicted? And what is its action?

The sternocleidomastoid, to laterally rotate and flex head (up and away); helps with forced inhalation

What is the highlighted region? And what is its action? What is its innervation?

Buccinator; presses cheeks against teeth and lips (such as blowing or sucking); facial nerve

What is the highlighted region? And what is its action? What is its innervation?

The Orbicularis Oris; to close and protrude lips (such as in kissing and whistling); facial nerve

What is the highlighted region? and what is its action? what is its innervation?

Orbicularis Oculi; to close the eyes; facial nerve

What is the highlighted region? what is its action? what is its innervation?

The Occipitofrontalis; to raise the eyebrow; facial nerve

What is the highlighted region? What is its action? What is its innervation?

The platysma; to depress the mandible; facial nerve

What is the highlighted region?

Trapezius

What is red-lighted, is it an origin/insertion, and for what muscle?

The occipital bone, ligamentum nuchae, and spinous processes of C7-T12. For the trapezius muscle.

What is the blue-lighted region, is it an origin/insertion, and for what muscle?

The acromion & spine of scapula; acromial end of clavicle

What muscle is being depicted? and what is its action?

The trapezius, to raise, rotate, and retract the scapula.

What muscle is being highlighted?

Serratus anterior

What is the red-lighted region? is it an origin/insertion, and for what muscle

Ribs 1-8, origin of the serratus anterior

What is the blue region supposed to be? is it an origin/insertion? and for what muscle?

entire anterior surface of the vertebral border of the scapula, insertion of the serratus anterior

What is the highlighted region being depicted, and what is its action?

the serratus anterior, protract scapula and hold scapula against (posterior) chest wall.

What is the muscle being pointed to? What is its action?

Rhomboid minor, elevate and retracts the scapula

What muscle is being pointed to? what is its action?

Rhomboid major, elevates and retracts scapula

What is the muscle in view? what is its action?

Erector spinae, extends the vertebral column

What muscle is being pointed to? what is its action? What is its innervation?

Diaphragm; to increase volume of thoracic cavity; phrenic nerve

What muscle is being highlighted? what is its function?

external intercostals, to elevate the ribs (with inhalation)

What muscle is being highlighted? what is its action?

Internal intercostals, Depress ribs (with forced exhalation)

What is the highlighted muscle? what is its function?

Levator Ani; Supports pelvic viscera, elevates and retracts the anus

What is the highlighted region? what is its action?

Internal oblique: compresses the abdomen, flexes, laterally flexes and rotates the vertebral column.

What is the highlighted muscle? what is its function?

External oblique; compresses abdomen, flexes, laterally flex and rotate vertebral column

What is the highlighted muscle? What is its action?

Transverse abdominis; compresses abdomen

What is the highlighted muscle? what is its action?

Rectus abdominis; flex vertebral column, compress abdominal column

What muscle is being highlighted?

Aponeurosis of external oblique

What muscle is this?

Inguinal ligament

What muscle is this

Linea Alba

What is the highlighted muscle?

Thoracolumbar fascia

What is the muscle being highlighted? What is its innervation?

The Gluteus maximus; gluteal nerve

What is the red line depicting? is it an origin/insertion, and for what muscle?

Dorsal ileum, sacrum, and coccyx; origin of the gluteus maximus

What are the blue dots representing? is it an origin/insertion, and for what muscle?

Gluteal tuberosity & iliotibial tract/band; The insertion for the gluteus maximus

What is the muscle being highlighted? what is its action?

The Gluteus maximus, to extend and laterally rotate the thigh

What is the muscle being highlighted? and what is its innervation

Gluteus medius; gluteal nerve

What is the muscle being highlighted? (from a different view) and what is its innervation?

Gluteus medius (from a lateral view), Gluteal nerve

What is the red-lighted region being depicted? is it an origin/insertion? and for what muscle

The lateral surface of ileum, the origin of the gluteus medius.

What is the blue region depicting? is it an origin/insertion, and for what muscle

The greater trochanter of femur, the insertion of the gluteus medius

What is the muscle being highlighted? and what is its action?

The gluteus medius, to abduct and medially rotate the thigh

What is the highlighted muscle? What is its innervation?

Biceps femoris, Sciatic nerve

What does the red dot represent? is it an origin/insertion? and for what muscle of the biceps femoris?

Ischial tuberosity; origin for long head of biceps femoris

What does the blue dot represent? is it an origin/insertion? for what muscle of the biceps femoris being shown?

common tendon into head of fibula & lateral condyle of tibia; insertion of long head of biceps femoris

What does the red-lighted area represent? is it an origin/insertion; for what muscle of the biceps femoris?

The linea aspera; origin for short head of biceps femoris

What do the blue dots represent; is it an origin/insertion; for what muscle of the biceps femoris being shown?

common tendon into head of fibula & lateral condyle of tibia; insertion for short head of biceps femoris.

What is the highlighted muscle shown? what is its action?

Biceps femoris; extend and laterally rotates the thigh & flexes the knee

What muscle is the highlighted region depicting? what is its innervation?

The semimembranosus; sciatic nerve

What is the red dot referring to? is it an origin/insertion, for what muscle? (not for one of the muscles in the biceps femoris)

Ischial tuberosity, origin for the semimembranosus

What does the blue dot represent? is it an origin/insertion, for what muscle?

The medial condyle of tibia; the insertion of the semimembranosus

What muscle does the highlighted region depict? what is its action?

The semimembranosus, to extend and medially rotate the thighs, and flex the knee

What muscle is the highlighted region depicting? what is its innervation?

The semitendinosus, the sciatic nerve.

What does the red dot represent? is it an origin/insertion? (learn to differentiate muscles using differing origins/insertions)

Ischial tuberosity, origin of the semitendinosus

What muscle is the highlighted region depicting? what is its action?

Semitendinosus, to extend and medially rotate the thigh, and to flex the knee

What is the highlighted muscle? what is its innervation?

The rectus femoris, the femoral nerve

What is the red dot representing? is it an origin/insertion, for what muscle?

The anterior inferior iliac spine, the origin of the rectus femoris.

What is the blue dot representing? is it an origin/insertion? for what muscle?

The patella and tibial tuberosity via patellar ligament, insertion of the rectus femoris

What is the highlighted muscle? what is its action?

The rectus femoris, to extend the leg and flex the thigh

What is the highlighted muscle? what is its innervation?

Vastus intermedius, femoral nerve

What is the red dot representing? is it an origin/insertion, for what muscle?

The anterolateral surface of femur, the origin of the vastus intermedius

what are the blue dots representing? is it an origin/insertion? for what muscle?

the patella and tibial tuberosity via patellar ligament, an insertion of the vastus intermedius

What is the highlighted muscle? what is its action?

vastus intermedius, extension at knee

What is the highlighted muscle? what is its innervation?

The vastus lateralis, the femoral nerve

What is are the red areas referring to? are they an origin/insertion, for what muscle?

The greater trochanter, intertrochanteric line, & Linea aspera; the origin of the vastus lateralis

What are the blue dots referring to? are they an origin/insertion, for what muscle?

The patella & tibial tuberosity via patellar ligament, insertion for the vastus lateralis.

What is the highlighted muscle? what is its action?

The vastus lateralis, to extend the leg/knee

What is the highlighted muscle? what is its innervation?

The vastus medialis, the femoral nerve.

What are the red areas referring to? are they an insertion/origin, for what muscle?

The Linea aspera and intertrochanteric line, the origin of the vastus medialis.

What are the blue dots representing? is it an origin/insertion, for what muscle?

the patella & tibial tuberosity, the insertion for the vastus medialis.

What is the highlighted muscle? what is its action?

The vastus medialis, to extend the leg/knee

What muscle is being highlighted?

The gracilis

What is the red dot/area referring to? is it an origin/insertion, for what muscle?

the inferior ramus of pubis, the origin of the gracilis.

What is the blue dot referring to? is it an insertion/origin, for what muscle?

To the area just inferior to the medial condyle of tibia, the insertion of the gracilis.

What is the highlighted muscle, what is its action?

The gracilis; to adduct, flex, and medially rotate the thigh.

What muscle is being highlighted? what is its innervation?

sartorius, femoral nerve

What is the red dot referring to? is it an origin/insertion, for what muscle?

the anterior superior iliac spine, the origin of the sartorius.

What is the blue dot referring to? is it an origin/insertion? for what muscle?

Medial condyle of tibia, insertion of the gastrocnemius.

What is the highlighted muscle? what is its action?

sartorius; flexes the leg, flexes, abducts, and laterally rotates the thigh

What is the highlighted muscle? what is its action?

The adductor magnus; adducts and laterally rotate the thigh

What is the highlighted muscle? what is its action?

Tensor fascia lata, to flex & abduct the thigh.

What is the innervation of the Tensor fascia lata?

gluteal nerve

What is the muscle highlighted, what is its action?

Piriformis, laterally rotates and abducts thigh

What is the highlighted muscle?

Iliotibial band/tract

What is the highlighted muscle? what is its innervation?

Gastrocnemius, the tibial nerve

What are the red dots referring to? is it an origin/insertion, for what muscle?

By two heads from medial and lateral condyles of femur; origin of the gastrocnemius.

What are the blue lighted regions referring to? is it an origin/insertion?

The calcaneus via the calcaneal tendon, the insertion of the gastrocnemius.

What is the highlighted muscle? What is its action?

Gastrocnemius; plantarflexes the foot, flexes the knee/leg.

What is the highlighted muscle? what is its innervation?

The soleus, the tibial nerve.

What are the red dots referring to? is it an origin/insertion, for what muscle?

The head and proximal shaft of fibula & superior tibia. Origin of the gastrocnemius.

What are the blue areas referring to? is it an origin/insertion, for what muscle?

The calcaneus via the calcaneal tendon, the insertion of the soleus.

What is the highlighted muscle? what is its action?

The soleus, plantarflexes the foot.

What is the highlighted muscle? What is its innervation?

The tibialis anterior, Fibular nerve