Intermediate Floating Ribs Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which term describes ribs 11 and 12 based on their posterior vertebral attachment and free anterior ends?
- Sternal ribs
- Vertebrosternal ribs
- Vertebral ribs
- Vertebrochondral ribs
Q2. What type of joint is formed between the head of the eleventh rib and the body of T11?
- Fibrous suture
- Synovial plane joint
- Primary cartilaginous joint
- Synovial hinge joint
Q3. Why do the heads of ribs 11 and 12 articulate with only one vertebral body each?
- They articulate only with intervertebral discs
- They have no heads
- Each has a single articular facet on its head
- Their heads are fused to the transverse processes
Q4. Which feature distinguishes the twelfth rib from a typical rib?
- It lacks a neck and tubercle
- It has two costotransverse joints
- It articulates directly with the sternum
- It has two articular facets on its head
Q5. Which floating rib may possess a short neck despite lacking an articular tubercle?
- Eleventh rib
- Twelfth rib
- Neither rib
- Both always have long necks
Q6. Which nerve runs inferior to the twelfth rib?
- Long thoracic nerve
- Phrenic nerve
- Subcostal nerve
- Vagus nerve
Q7. The subcostal nerve is derived from which spinal nerve?
- T10
- L1
- T12
- T11
Q8. Which muscle has an important attachment to the twelfth rib and forms part of the posterior abdominal wall?
- Quadratus lumborum
- Pectoralis major
- Biceps brachii
- Sternocleidomastoid
Q9. Which respiratory muscle attaches to the inner surfaces of the lower six ribs, including the floating ribs?
- Diaphragm
- Platysma
- Deltoid
- Masseter
Q10. Why are floating ribs more mobile than typical ribs?
- They are attached directly to the clavicles
- They are fused to the abdominal wall
- They lack anterior attachments and costotransverse joints
- They have no vertebral articulations