Anatomy Block 2 Flashcards
Which are false ribs?
8-12
Which are the true ribs?
1-7
Which are floating ribs?
11 and 12
Where does the costal cartilage of the 2nd rib attach to the sternum?
At the sternal angle
What is a false rib?
A rib that does not have its own costal cartilage that attaches to the sternum.
How many intercostal spaces are there?
9
What intercostal space is between the 3rd and 4th rib?
3rd intercostal space
What structures attach to the manubrium of the sternum?
First ribs, clavicles
Ribs attach ______ on the front (to the sternum) than to the back (to the spine).
lower
In what intercostal space is the nipple found?
4th intercostal space
What dermatome is the nipple in? The umbilicus?
T4, T10
What are the accessory muscles of inspiration?
Sternocleidomastoid, 3 scalenes (anterior, middle, posterior)
What does the sternocleidomastoid muscle do?
Elevates sternum
What do the scalene muscles do?
Elevate and fix the upper ribs
What are the principal muscles of inspiration?
External intercostals and diaphragm
What are the active muscles of expiration?
Internal intercostals, rectus abdominis, external oblique, internal oblique, transversus abdominis
In what intercostal space is the horizontal fissure of the right lung located?
3rd intercostal space
In what intercostal space is the oblique fissures of the right and left lungs located?
5th intercostal space
Where are the best places to hear right middle lobe breath sounds?
Front and side
Each lung has one _____ and two _____
artery, veins
What is the order of structures, from anterior to posterior, in the hilum? What structure is most inferior?
VAB:
Vein
Artery
Bronchus
Most inferior: inferior pulmonary vein
Pleural fluid accumulation would show what on an x-ray?
Blunting of the costodiaphragmatic recess