Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy > Thoracic Muscles > Flashcards

Thoracic Muscles Flashcards

1
Q

What is the origin of the Pectoralis Major?

A

Sternum, Clavicle, Costal Margins.

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

What is the insertion of the Pectoralis Major?

A

Intertubular groove of the humerus

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

What are the actions of the Pectoralis Major?

A

Flexion, adduction, and medial rotation of humerus.

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

What innervates the Pectoralis Major?

A

Medial pectoral nerve (C8-T1) and lateral pectoral nerve (C5-C7).

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

What is the origin of the Pectoralis Minor?

A

Ribs 3-5

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

What is the insertion of the Pectoralis Minor?

A

Coracoid process of the scapula.

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

What are the actions the Pectoralis Minor?

A

Stabilizes scapula against posterior thoracic wall.

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

What innervates the Pectoralis Minor?

A

Medial pectoral nerve (C8-T1).

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

What is the origin of the Serratus Anterior?

A

Ribs 1-8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the insertion of the Serratus Anterior?

A

Medial margin of the scapula.

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

What are the actions of the Serratus Anterior?

A

Scapular abduction and stabilizer of the scapula against the thoracic wall.

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

What innervates the Serratus Anterior?

A

Long thoracic nerve

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

What is the origin of the Subclavius?

A

Medially at Rib 1

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

What is the insertion of the Subclavius?

A

Laterally at subclavian groove

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

What are the actions of the Subclavius?

A

Pulls clavicle inferiorly and anteriorly, stabilizes sternoclavicular joint, and depress tip of shoulder.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What innervates the Subclavius?

A

Subclavius nerve

17
Q

What are the superficial thoracic muscles?

A

Pectoralis Major, and Minor, Serratus Anterior, and Subclavius

18
Q

What are the deep thoracic muscles?

A

External, Internal, and Innermost Intercostals

19
Q

What is the origin of the external intercostals?

A

Inferior border of superior rib

20
Q

What is the insertion of the external intercostals?

A

Superior border of the inferior rib

21
Q

What are the actions of the external intercostals?

A

Elevates ribs to expand chest capacity during inhalation.

22
Q

What is the origin of the internal intercostals?

A

Superior border of inferior rib

23
Q

What is the insertion of the internal intercostals?

A

Inferior border of superior rib

24
Q

What are the actions of the internal intercostals?

A

Depress the ribs to decrease chest capacity during expiration.

25
Q

What are the actions of the innermost intercostals?

A

Function of the muscles is expiration because these muscles depress the ribs caudally.

26
Q

What is the innervation of the deep thoracic muscles?

A

Intercostal nerves

Anatomy (60 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions