21958916
Description
Flashcards by Evian Chai, updated more than 1 year ago
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Created by Evian Chai
about 4 years ago
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| Question | Answer |
| What are the 4 components of the thorax? | 1. Coastal cartilage 2. Ribs 3. Thoracic vertabrae 4. Sternum |
| What are the three parts of the sternum? | 1. Manubrium 2. Body 3. Xiphoid process |
| How many vertebrae in the spinal column? | 12 |
| What is the difference between true, false, and floating ribs? Which ribs are which? | True has direct articulation with sternum and coastal cartilage (1-7) False has indirect articulation (8-10) Floating has no articulation (11, 12) |
| What are features of a typical rib? | Head Upper articulate facet Neck Lower articulate facet Tubercle Body Coastal groove 3 Articulations |
| How many articulations does a typical rib have? Which features articulate with what? | 3 articulations Upper articulate facet articulates with vertebrae ABOVE Lower articulate facet+ Tubercle articulates with CORRESPONDING vertabrae |
| What does the coastal groove contain? | The neuromuscular bundle |
| Why is Rib 1 an atypical rib? (4) | Only has one facet instead of two Articulates with just T1 2 Coastal grooves Sharply curved |
| Why is rib 2 an atypical rib? | Longer/thinner, has tuberosity on surface for muscle |
| Why are ribs 10, 11, 12 atypical? | One facet that articulates with corresponding vertebrae 11 and 12 are short, no neck/tubercle/coastal cartilage |
| What are 3 functions of the thorax? | 1. Attach muscles 2. Protect internal organs 3. Respiration |
| What direction do external intercoastal muscles run? What is their role in breathing? | They run anteriorinferiorally Contract/move up during inspiration |
| What direction do internal and innermost intercoastal muscles run? What is their role in breathing? | Opposite external Contract/move down |
| Intercoastal muscles are innervated by | Intercoastal nerves |
| The neuromuscular bundle contains | 1. Intercoastal vein 2. Intercoastal artery 3. Intercoastal nerve |
| The neuromuscular bundle is supplied by | The mixed spinal nerve |
| What type of joint is the intervertebral joint? | Secondary cartilaginous (fibrocartilage composition) |
| What type of joint is the sternalcoastal joint? | The first joint is primary cartilaginous The rest are synovial |
| What type of joint is the costalvertabral joint? | Synovial plane joint |
| What type of joint is the interchondral joint? | Synovial plane joint It is the connection between coastal cartilages of 6-7, 7-8, 8-9 |
| What type of joint is the coastalchondral joint? | Primary cartilaginous |
| What type of joint is the xiphisternal joint? | Primary cartilaginous |
| What type of joint is the Manubriosternal joint? | Secondary cartilaginous (symphysis) |
| What type of joint is the coastotransverse joint? | Synovial plane joint |
| Where is the sternal angle? | Between the manubrium and the body of the sternum, in line with T4 |
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