Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Anatomy & Physiology > Muscles > Flashcards

Muscles Flashcards

(78 cards)

Start Studying
1
Q

Skeletal

A

Striation: Yes

Shape: Long, cylindrical cells

Nuclei: Multinucleate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

External Intercostals

A

Origin - Inferior border of rib above

Insertion - Superior border of rib below

Function - Aid in inspiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Teres Major

A

Origin - Posterior surface at interior angle of scapula

Insertion - Intertubercular sulcus of humerus

Function - Extends humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Brachioradialis

A

Origin - Lateral ridge at distal end of humerus

Insertion - Base of styloid process of radius

Function - Synergist in forearm flexion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

(muscles of the rotator cuff)

Origin - Infraspinous fossa of scapula

Insertion - Greater tubercle of humerus

Function - Lateral rotation of humerus

A

Infraspinatus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Origin - Arises indirectly from mandible and maxilla

Insertion - Encirlces mouth

Function - Closes lips

A

Obicularis oris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Origin - Zygomatic bone

Insertion - Skin and muscle at corners of mouth

Function - Raises lateral corners of mouth upwards

(smiling muscle)

A

Zygomaticus minor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Zygomaticus Major

A

Origin - Zygomatic bone

Insertion - Skin and muscle at corners of mouth

Function - Raises lateral corners of mouth upwards

(smiling muscle)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Obicularis Oris

A

Origin - Arises indirectly from mandible and maxilla

Insertion - Encirlces mouth

Function - Closes lips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Rectus Abdominis

A

Origin - Pubic crest

Insertion - Xiphoid process

Function - Flexes and rotates vertebral column

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Origin - Zygomatic arch and maxilla

Insertion - Angle and ramus of mandible

Function - Prime mover of jaw closure

A

Masseter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Origin - Lateral ridge at distal end of humerus

Insertion - Base of styloid process of radius

Function - Synergist in forearm flexion

A

Brachioradialis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Buccinator

A

Origin - Molar region of mandible and maxilla

Insertion - Obicularis oris

Function - Compresses cheeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Origin - Spinous processes of C7 and T1 – T5

Insertion - Medial border of scapula

Function - Stabilize scapula

A

Rhomboids Minor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Platysma

A

Origin - Fascia of chest

Insertion - Lower margin of mandible

Function - Tenses skin of neck

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Trapezius

A

Origin - Occipital bone

Insertion - Lateral third of clavicle

Function - Extends head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Origin - Temporal fossa

Insertion - Coronoid process of mandible

Function - Closes jaw

A

Temporalis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Origin - Fascia of chest

Insertion - Lower margin of mandible

Function - Tenses skin of neck

A

Platysma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Striations: Yes

Shape: Branching cells, intercalated cells

Nuclei: Uninucleate

A

Cardiac

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Infraspinatus

A

(muscles of the rotator cuff)

Origin - Infraspinous fossa of scapula

Insertion - Greater tubercle of humerus

Function - Lateral rotation of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Origin - Posterior surface at interior angle of scapula

Insertion - Intertubercular sulcus of humerus

Function - Extends humerus

A

Teres Major

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

(Occipitalis)

Part of Epicranius

Origin - Occipital bone

Insertion - Galea aponeurotica

Function - Fixes aponeurosis

A

Occipital belly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Rhomboids Major

A

Origin - Spinous processes of C7 and T1 – T5

Insertion - Medial border of scapula

Function - Stabilize scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Internal Obliques

A

Origin - Iliac crest

Insertion - Pubic crest

Function - Flexes and rotates vertebral column

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
**_Origin_** - Lateral aspect of ribs 1 - 8 (or 9) **_Insertion_** - Vertebral border of anterior surface of scapula **_Function_** - Rotates scapula
Serratus anterior
17
Zygomaticus Minor
**_Origin_** - Zygomatic bone **_Insertion_** - Skin and muscle at corners of mouth **_Function_** - Raises lateral corners of mouth upwards (smiling muscle)
17
Supraspinatus
(muscles of the rotator cuff) **_Origin_** - Supraspinous fossa of scapula **_Insertion_** - Greater tubercle of humerus **_Function_** - Stabilizes shoulder joint
19
Skeletal Cardiac Smooth
3 Types of Muscles
19
**_Origin_** - Zygomatic bone **_Insertion_** - Skin and muscle at corners of mouth **_Function_** - Raises lateral corners of mouth upwards (smiling muscle)
Zygomaticus major
19
Bone that moves when the muscle contracts
Insertion
19
(muscles of the rotator cuff) **_Origin_** - Lateral margin of scapula **_Insertion_** - Greater tubercle of humerus **_Function_** - Lateral rotation of humerus
Teres Minor
21
Masseter
**_Origin_** - Zygomatic arch and maxilla **_Insertion_** - Angle and ramus of mandible **_Function_** - Prime mover of jaw closure
22
**_Striation_**: Yes **_Shape_**: Long, cylindrical cells **_Nuclei_**: Multinucleate
Skeletal
23
Occipital Belly
(Occipitalis) Part of Epicranius **_Origin_** - Occipital bone **_Insertion_** - Galea aponeurotica **_Function_** - Fixes aponeurosis
24
Transversus Abdominus
**_Origin_** - Iliac crest **_Insertion_** - Pubic crest **_Function_** - Compresses abdominal contents
25
Bone that does not move when the muscle contracts
Origin
26
**_Striations_**: No **_Shape_**: Spindle-shaped cells **_Nuclei_**: Uninucleate
Smooth
28
Serratus Anterior
**_Origin_** - Lateral aspect of ribs 1 - 8 (or 9) **_Insertion_** - Vertebral border of anterior surface of scapula **_Function_** - Rotates scapula
30
Insertion
Bone that moves when the muscle contracts
31
**_Origin_** - Spinous processes of C7 and T1 – T5 **_Insertion_** - Medial border of scapula **_Function_** - Stabilize scapula
Rhomboids Major
33
External Obliques
**_Origin_** - Anterior surface of last 8 ribs **_Insertion_** - Pubic crest **_Function_** - Flexes and rotates vertebral column
35
**_Origin_** - Pubic crest **_Insertion_** - Xiphoid process **_Function_** - Flexes and rotates vertebral column
Rectus abdominis
36
Temporalis
**_Origin_** - Temporal fossa **_Insertion_** - Coronoid process of mandible **_Function_** - Closes jaw
37
Sternocleidomastoid
**_Origin_** - Manubrium of sternum **_Insertion_** - Mastoid process of temporal bone **_Function_** - Rotate towards shoulder of opposite side
39
**_Origin_** - Inferior border of rib **_Insertion_** - Central tendon **_Function_** - Prime mover of inspiration
Diaphragm
40
3 Types of Muscles
Skeletal Cardiac Smooth
42
**_Origin_** - Iliac crest **_Insertion_** - Pubic crest **_Function_** - Compresses abdominal contents
Transversus abdominus
43
Frontal Belly
(Frontalis) Part of Epicranius **_Origin_** - Galea aponeurotica (cranial aponeurosis) **_Insertion_** - Skin of eyebrows **_Function_** - Raises eyebrows
44
Triceps Brachii
**_Origin_** - Long head – inferior margin of glenoid cavity; lateral head – posterior humerus **_Insertion_** - Olecranon process of ulna **_Function_** - Powerful forearm extensor
45
**_Origin_** - Anterior surface of last 8 ribs **_Insertion_** - Pubic crest **_Function_** - Flexes and rotates vertebral column
External obliques
46
**_Origin_** - Short head: coracoid process **_Insertion_** - Radial tuberosity **_Function_** - Flexion (powerful) of elbow
Biceps Brachii
47
Biceps Brachii
**_Origin_** - Short head: coracoid process **_Insertion_** - Radial tuberosity **_Function_** - Flexion (powerful) of elbow
48
Rhomboids Minor
**_Origin_** - Spinous processes of C7 and T1 – T5 **_Insertion_** - Medial border of scapula **_Function_** - Stabilize scapula
49
(Frontalis) Part of Epicranius **_Origin_** - Galea aponeurotica (cranial aponeurosis) **_Insertion_** - Skin of eyebrows **_Function_** - Raises eyebrows
Frontal belly
50
**_Origin_** - Frontal and maxillary bones and ligaments around orbit **_Insertion_** - Encircles orbit and inserts in tissue of eyelid **_Function_** - Closes eyes
Obicularis oculi
51
**_Origin_** - Lateral 1/3 of clavicle **_Insertion_** - Deltoid tuberosity of humerus **_Function_** - Prime mover of arm abduction
Deltoid
52
**_Origin_** - Superior border of rib below **_Insertion_** - Inferior border of rib above **_Function_** - Aids in forced expiration
Internal intercostals
54
Internal Intercostals
**_Origin_** - Superior border of rib below **_Insertion_** - Inferior border of rib above **_Function_** - Aids in forced expiration
54
**_Origin_** - Inferior border of rib above **_Insertion_** - Superior border of rib below **_Function_** - Aid in inspiration
External intercostals
55
Pectoralis Minor
**_Origin_** - Anterior surface of ribs 3 - 5 **_Insertion_** - Coracoid process of scapula **_Function_** - Draws ribcage superiorly
57
Origin
Bone that does not move when the muscle contracts
58
**_Origin_** - Long head – inferior margin of glenoid cavity; lateral head – posterior humerus **_Insertion_** - Olecranon process of ulna **_Function_** - Powerful forearm extensor
Triceps Brachii
60
**_Origin_** - Anterior surface of ribs 3 - 5 **_Insertion_** - Coracoid process of scapula **_Function_** - Draws ribcage superiorly
Pectoralis minor
61
**_Origin_** - Indirect attachment to iliac crest **_Insertion_** - Floor of intertubecular sulcus of humerus **_Function_** - Prime mover of arm extension
Latissimus Dorsi
63
Cardiac
**_Striations_**: Yes **_Shape_**: Branching cells, intercalated cells **_Nuclei_**: Uninucleate
65
Different pectoral major portions
**_Origin_** - Clavicle **_Insertion_** - Short tendon into intertubercular sulcus of humerus **_Function_** - Medially rotates arms
66
Obicularis Oculi
**_Origin_** - Frontal and maxillary bones and ligaments around orbit **_Insertion_** - Encircles orbit and inserts in tissue of eyelid **_Function_** - Closes eyes
68
**_Origin_** - Clavicle **_Insertion_** - Short tendon into intertubercular sulcus of humerus **_Function_** - Medially rotates arms
Different pectoral major portions
69
Smooth
**_Striations_**: No **_Shape_**: Spindle-shaped cells **_Nuclei_**: Uninucleate
70
**_Origin_** - Molar region of mandible and maxilla **_Insertion_** - Obicularis oris **_Function_** - Compresses cheeks
Buccinator
71
**_Origin_** - Occipital bone **_Insertion_** - Lateral third of clavicle **_Function_** - Extends head
Trapezius
72
Latissimus Dorsi
**_Origin_** - Indirect attachment to iliac crest **_Insertion_** - Floor of intertubecular sulcus of humerus **_Function_** - Prime mover of arm extension
73
Diaphragm
**_Origin_** - Inferior border of rib **_Insertion_** - Central tendon **_Function_** - Prime mover of inspiration
74
(muscles of the rotator cuff) **_Origin_** - Supraspinous fossa of scapula **_Insertion_** - Greater tubercle of humerus **_Function_** - Stabilizes shoulder joint
Supraspinatus
75
**_Origin_** - Manubrium of sternum **_Insertion_** - Mastoid process of temporal bone **_Function_** - Rotate towards shoulder of opposite side
Sternocleidomastoid
76
Deltoid
**_Origin_** - Lateral 1/3 of clavicle **_Insertion_** - Deltoid tuberosity of humerus **_Function_** - Prime mover of arm abduction
77
**_Origin_** - Iliac crest **_Insertion_** - Pubic crest **_Function_** - Flexes and rotates vertebral column
Internal obliques
78
Teres Minor
(muscles of the rotator cuff) **_Origin_** - Lateral margin of scapula **_Insertion_** - Greater tubercle of humerus **_Function_** - Lateral rotation of humerus

Anatomy & Physiology (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions