RESPIRATORY MUSCLES

Question 1

Respiratory M.

Answer 1

*10 + diaphragma
1. M. Serratus dorsalis cranialis (INSP)
2. M. Serratus dorsalis caudalis (EXP)
3. M. Intercostalis externus (INSP)
4. M. Intercostalis internus (EXP)
5. M. Rectus thoracis (IN)
6. M. Transversus thoracis (EX)
7. M. Levatores costarum (insp)
8. M. Scalenius (insp)
9. M. Retractor costa ultimae (ex)
10. M. Subcostalis (ex)
+ Diaphragma

Question 2

Respiratory M

M. Scalenius

Answer 2

SCALENIUS
DORSALIS
O: Proc. Transversus C4-C6
I:
dorsal: Rib 1-4
Ventral: Rib 1-8/9
(CRAN)

MEDIUS:
O: Processus Transversus C6-7
I: 1 rib

A: INSPIRATION

Question 3

Respiratory M

M.Serratus dorsalis cranialis

Answer 3

O: Proc.Spinosus Th1-7 + Thoracolumb facia
I: Rib 1-10 prox
A: INSPIRATION

Question 4

Respiratory M

M.Serratus dorsalis caudalis

Answer 4

O: Thoracolumbar facia
I: Rib 11-13 prox
A: EXPIRATION

Question 5

Respiratory M

M. Rectus Thoracis

Answer 5

O: Rib 1
I: Rib 2-4 (ventrally)
A: INSP

Question 6

Respiratory M

M. Retractor costae Ultimae

Answer 6

O: L1-L4 + Thoracolumbar facia
I: Last rib (caudal)
A: EXPIRATION

Question 7

Respiratory M

M. INTERCOSTALIS Externus

Answer 7

O: Rib n (caudal)
I: Rib N+1 (cranial)
A: EXPIRATION

Question 8

Respiratory M

M. INTERCOSTALIS Internus

Answer 8

O: Rib N-1 Cranial
I: Rib N caudal
A: INSPIRATION //

Question 9

Respiratory M

M. SUBCOSTALIS

Answer 9

Crossing medial surface of rib 9-11

A: EXPIRATION

Question 10

Respiratory M

M.Transversus Thoracis

Answer 10

O: Sternum, inner surface
I: 2-8 costal cartilages (ventral to costochondral joint)
A: EXPIRATION

Question 11

Respiratory M

The most important respiratory muscle

Answer 11

DIAPHRAGMA
- Helps increase abdominal pressure
LAYERS:
1. Plaura
2. Fascia Endothoracica
3. M.Phrenicus
4. Fascia Abdominalis
5. Peritoneum

M. PHRENICUS - Corona Muscularis
1. Pars sternalis
2. Pars Lumbalis
3. Pars Costalis
Meet in CENTRUM TENDINEUM

Other structures:
1. Capula diaphragmatica
- Cranial Part
2. Arcus lumbocostalis 
- Connection btw Lubar and costal parts
3. Trigonum Lubocostale 
(=no phrenic M = Vulnerable to hernias)
4. Hiatus Aorticus, 
- Opening for the Aorta
- Formed by crus sinister and crus dexter
5. Hiatus Oesophagus
- Opening for the oesophagus
- Extension of crus dexter