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Human Dissection > Exam 1 > Flashcards

Exam 1 Flashcards

1
Q

What’s unique about the woman’s reproductive system in the autopsy video?

A

slit in cervix (probably had at least 1 child), had a benign tumor in her uterus, was still ovulating, had breast implants

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2
Q

Origin, Insertion, and action of the frontal belly of the occipitofrontalis

A

O: skin and subcutaneous layer of forehead and eyebrows
I: galea aponeurotica
A: raises eyebrows, wrinkles forehead

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3
Q

Origin, Insertion, and Action of the Occipital belly of the Occipitofrontalis

A

O: superior nuchal line
I: galea aponeurotica
A moves the scale posteriorly

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4
Q

Origin, Insertion, and Action of Orbicularis Oris

A

O: mandible, maxilla, other muscles
I: skin and lips surrounding mouth
A: puckers lips (kissing muscle)

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5
Q

Origin, Insertion, and action of platysma

A

O: deltoid and pec major and acromion of scapula
I: skin of cheek and mandible
A: pulls lip down, tenses neck, depression of mandible

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6
Q

Origin, insertion and action of buccinator

A

O: alveolar processes of mandible and maxilla
I: orbicularis oris
A: “trumpeter” compresses cheek, sucking and blowing

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7
Q

Origin, insertion, and action of sternocleidomastoid

A

O: manubrium, sternal ends of clavicles
I: mastoid process of temporal bones
A: head forward and down (both contract), turns head opposite of side contracting

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8
Q

Origin, insertion and action of temporalis

A

O: superior and inferior portions of temporal bone
I: coronoid process of mandible
A: elevates and retracts mandible

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9
Q

Origin, insertion, and action of masseter

A

O: zygomatic arch
I: Lateral surface of coronoid process; lateral surface and angle of mandible
A: elevates and protracts mandible

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10
Q

Origin, insertion and action of medial pterygoid

A

O: zygomatic arch
I: medial surface of mandibular ramus
A: elevates and protracts the mandible; side to side movement of mandible

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11
Q

Origin, insertion, and action of later pterygoid

A

O: greater wing of sphenoid and lateral surface of lateral pterygoid plate of sphenoid
I: condylar process of mandible
A: protracts mandible; side to side movement, depresses the mandible

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12
Q

Common antagonistic muscle pairs

A

-biceps and triceps
-hamstrings and quadriceps
-pectoralis major and latissimus Doris

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13
Q

Common synergistic muscle pairs

A

-infraspinatus and teres minor
-brachialis and brachioradialis
- pectoralis minor and serratus anterior
- latissimus dorsi and teres major

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14
Q

Origin, insertion and action of external oblique

A

O: external inferior borders of lower ribs
I: Linea alba
A: compress abdominal wall and flex vertebral column (both contract) lateral flexion of the vertebral column to the same side contracting

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15
Q

Origin, insertion, and action of internal oblique

A

O: lumbar fascia, inguinal ligament, and iliac crest
I: linea alba
A: compress abdominal wall and flex vertebral column (when both contract) later flexion of the vertebral column to the opposite side contracting

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16
Q

Origin, insertion, and action of transverse abdominis

A

O: iliac crest, lumbar fascia, inguinal ligament
I: linea alba
A: compress the abdominal wall (both contract) lateral flexion of the vertebral column (one contract)

17
Q

Origin, insertion, action of rectus abdominis

A

O: superior surface of pubis near symphysis
I: xiphoid process of sternum
A: flexes vertebral column and compresses the abdominal wall

18
Q

Auditory ossicles

A

Malleus, incus, stapes (hammer, anvil, and stirrup)

19
Q

Facial bones

A

-14 facial bones
- 2 maxilla
- 2 palantine
- 2 zygomatic
- 2 lacrimal
- 2 nasal
- 1 vomer
- 2 inferior nasal concha
- 1 mandible

20
Q

Origin, insertion, and action of serratus anterior

A

O: anterior and superior margins of upper ribs
I: medial (vertebral) border of scapula and anterior surface of scapula
A: scapula protraction, superiorly rotates scapula

21
Q

Origin, insertion, and action of pectoralis minor

A

O: sternal ends of upper ribs
I: coracoid process of scapula
A: protracts and depresses the scapula

22
Q

Origin, insertion, and action of trapezius

A

O: superior nuchal line, ligamentum nuchae, spinour processes of C7-T12
I: clavicle, acromion process, spine of scapula
A: elevates, superiorly rotates, and retracts scapula; draws head back

23
Q

Origin, insertion, and action of rhomboid major

A

O: spinous processes of T2-T5
I: medial (vertebral) border of scapula
A; retracts and elevates scapula and inferiorly rotates scapula

24
Q

Rhomboid minor

A

O: spinous process of C7-T1
I: medial (vertebral border of scapula
A: retracts and elevates scapula; inferiorly rotates scapula (same as rhomboid major)

25
Q

Origin, insertion and action of deltoid

A

O: acromial end of clavicle, the acromion, spine of scapula
I: deltoid tuberosity on lateral mid-region of humerus
A: anterior fibers flex and medially rotate arm; middle fibers arm abduction; posterior fibers extend and laterally rotate the arm

26
Q

Origin, insertion and action of coracobrachialis

A

O: coracoid process of scapula
I: middle medial shaft of humerus
A: adducts and flexes arm

27
Q

Origin, insertion, and action of teres major

A

O: inferior lateral border and inferior angle of the scapula
I: lesser tubercle and intertubercular groove at proximal end of humerus
A: arm extension and adducts and medially rotates arm

28
Q

What are the rotator cuff muscles?

A

Supraspinatus, infraspinatus, subscapularis, teres minor

29
Q

Origin, insertion and action of subscapularis

A

O: subscapular fossa
I: lesser tubercle of humerus
A: medially rotates arm

30
Q

Origin, insertion, and action of supraspinatus

A

O: supraspinous fossa of scapula
I: greater tubercle of humerus
A: abducts the arm

31
Q

Origin, insertion, and action of infraspinatus

A

O: infraspinour fossa of scapula
I: greater tubercle of humerus
A: adducts and laterally rotates the arm

32
Q

Origin, insertion, and action of teres minor

A

O: upper lateral border of scapula
I: greater tubercle of humerus
A: adducts and laterally rotates the arm

33
Q

Bones of the foot

A

Calcaneus, talus, cuboid, navicular, medial, intermediate, and lateral cuneiform, metatarsals, phalanges

34
Q

Muscles of the neck

A

Splenius capitus, semispinalis capitus, sternocleidomastoid

35
Q

Origin, insertion, and action of the diaphragm

A

O: xiphoid process, inferior borders of ribs
I: central tendon
A: inspiration

36
Q

“The pencils” of the body

A

Styloid processes on radius, ulna, and temporal bone

Human Dissection (1 decks)

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