Lecture 31 (Ribs 1)

Question 1

Ribcage Functions

Answer 1

• Protection: Vital organs of respiration and circulation
• Respiration: By creation of negative intrathoracic pressure
• Circulation (venous and lymphatic): Creation of negative intrathoracic pressure assists with venous and lymphatic return

Question 2

Pump Handle

Answer 2

With inhalation the anterior aspect of the rib moves cephalad, thus increasing the AP diameter of the thorax.
Ribs 1 – 5 are the main ones with this motion

Question 3

Bucket Handle

Answer 3

With inhalation the lateral aspect of the rib moves cephalad, thus increasing the transverse diameter of the thorax.
Ribs 6 – 10 are the main ones with this motion

Question 4

Caliper

Answer 4

With inhalation the ribs move around the single articulation, analogous to internal and external rotation with a bit of “bucket and pump handle” motion.
Ribs 11 & 12

Question 5

“Locked-up” ribs will move easier towards

Answer 5

• inhalation than exhalation.
• Ease of motion is with inhalation
• Restricted motion in exhalation
• Rib(s) with this SD will not go down during exhalation as much as the same ribs on other side of the rib cage

Question 6

“Locked-down” ribs will move easier towards

Answer 6

• exhalation than inhalation.
• Ease of motion is with exhalation
• Restricted motion is inhalation
• Rib(s) with this SD will not come up during inhalation as much as the same ribs on the other side of the rib cage

Question 7

locked up diagnosed when

Answer 7

the pateint exhales

Question 8

locked down is when the

Answer 8

the patient inhales

Question 9

Rib 1 muscles group

Answer 9

anterior and middle scalenes

Question 10

Rib 2 muscle groups

Answer 10

posterior scalene

Question 11

Ribs 3-5 muscle groups

Answer 11

pec minor

Question 12

rib 6-9 muscle group

Answer 12

serratus ant

Question 13

rib 10-12 muscle group

Answer 13

lat dorsi