Lab 7 Muscles Flashcards

1
Q
A

Frontails
Origin: cranial aponeurosis
Insertion: skin of eyebrow
Function: raise eyebrows

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2
Q

Orbicularis oris

A

Origin: muscle surrounding mouth
Insertion: skin and muscle around mouth
Function: closes the protrudes and lips

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3
Q
A

Zygomaticus major
Origin: zygomatic bone
Insertion: skin and muscle at upper corner of lips
Function: raises the corner of mouth (smile)

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4
Q
A

Masseter
Origin: zygomatic arch
Insertion: mandible
Function: closes mouth (elevates mandible)

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5
Q
A

Temporalis
Origin: temporal bone
Insertion: mandible
Function: closes the mouth (elevates mandible)

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6
Q
A

Sternocleidomastoid
Origin: sternum, clavicle
Insertion: temporal bone
Function:flexes neck, rotates head

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7
Q
A

External intercostals
Origin: superior rib
Insertion: inferior rib
Function: elevates the ribs, assists inspiration

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8
Q
A

Internal intercostals
Origin: inferior rib
Insertion: superior rib
Function: depresses the ribs, assists expiration

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9
Q
A

Diaphragm
Origin: xiphoid, costal cartilage,lumbar vertebrae
Insertion: central tendon
Function: inspiration

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10
Q
A

Recuts abdominis
Origin: pubis
Insertion: costal cartilages of ribs 5-7
Function: flexes the vertebral column (torso)

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11
Q
A

External oblique
Origin: lower 8 ribs
Insertion: iliac crest
Function: flexes and rotates the torso

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12
Q
A

Transversus abdominis
Origin: costal cartilage of ribs 7-12, iliac crest, lumbodorsal fascia
Insertion: linea alba, pubis
Function: compresses the abdomen

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13
Q
A

Trapezius
Origin: occipital bone
Insertion: clavicle, scapula
Function: extends and rotates neck, elevates shoulder girdle

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14
Q
A

Pectoralis major
Origin: clavicle, sternum, cartilage of ribs 2-6
Insertion: humerus
Function: flexes, adducts and rotates the shoulder

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15
Q
A

Pectoralis major
Origin: clavicle, sternum, cartilage of ribs 2-6
Insertion: humerus
Function: flexes, adducts and rotates the shoulder

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16
Q
A

Latissimus dorsi
Origin: spines of lower thoracic vertebrae, lumbar vertebrae
Insertion: humerus
Function: extends, adducts and rotates the shoulder

17
Q
A

Deltoid
Origin: clavicle, scapula
Insertion: humerus
Function: abducts and rotates the shoulder

18
Q
A

Biceps brachii
Origin: scapula
Insertion: radius
Function: flexes the shoulder and elbow, supinates the forearm

19
Q
A

Brachialis
Origin: humerus
Insertion: ulna
Function: flexes the elbow

20
Q
A

Brachioradialis
Origin: humerus
Insertion: radius
Function: flexes the elbow

21
Q
A

Triceps brachii
Origin: scapula and posterior humerus
Insertion: olecranon process of ulna
Function: extends shoulder and elbow

22
Q
A

Gluteus maximus
Origin: posterior sacrum and ilium
Insertion: femur and iliotibial band
Function: extends and rotates hip

23
Q
A

Gluteus medius
Origin: ilium
Insertion: femur
Function: abducts nd rotates hip, keeps pelvic level in gait

24
Q
A

Gluteus minimus
Origin: ilium
Insertion: femur
Function: abducts and rotates hip

25
Rectus femoirs Origin: ilium, femur Insertion: tibia via patella Function: extends knee, flexes hip
26
Vastus lateralis Origin: ilium, femur Insertion: tibia via patella Function: extends knee
27
Vactus medialis Origin: ilium, femur Insertion: tibia via patella Function: extends the knee
28
Sartorius Origin: ilium Insertion: tibia Function: flexes, abducts and rotates hip + flexes knee
29
Biceps femoris Origin: ischium, femur Insertion: tibia, fibula Function: flexes knee, extends hip
30
Semitendinosus Origin: ischium, femur Insertion: tibia, fibula Function: flexes knee, extends hip
31
Semimembranosus Origin: ischium, femur Insertion: tibia, fibula Function: flexes knee, extends hip
32
Tibialis anterior Origin: anterior tibia Insertion: medial cuneiform, 1st metatarsal Function: flexes ankle and inverts foot
33
Fibularis longus Origin: lateral fibula Insertion: medial cuneiform, 1st metatarsal Function Function: flexes ankle, everts foot
34
Gastrocnemius Origin: femur Insertion: calcaneus by Achilles tendon Function: flexes ankle and knee
35
Soleus Origin: posterior tibia and fibula Insertion: calcaneus by Achilles tendon Function: flexes ankle