III. Basic Osteology of the Vertebral Column, Sternum and Ribs: Ribs: Rib 1

Question 1

What is present on the head of the first rib?

Answer 1

a single articular surface

Question 2

What is lacking at the head of the first rib?

Answer 2

the interarticular crest

Question 3

Is there a crest on the neck of the first rib?

Answer 3

not a well-developed one like on the typical rib

Question 4

What features may be identified on the tubercle of a typical rib?

Answer 4

the articular surface of the tubercle and the non-articular surface of the tubercle

Question 5

Which feature of the tubercle of a typical rib is closer to the head of the rib?

Answer 5

the articular surface of the tubercle

Question 6

Which feature of the tubercle of a typical rib is closer to the shaft of the rib?

Answer 6

the non-articular surface of the tubercle

Question 7

What is unique about the body (corpus or shaft) of the first rib?

Answer 7

the body(corpus or shaft) of the first rib is flattened and has a scalene tubercle flanked by the groove for the subclavian artery and the groove for the subclavian vein

Question 8

Which groove on the body (corpus or shaft) of the first rib is close to the vertebral end?

Answer 8

the groove for the subclavian artery and the first thoracic nerve

Question 9

Which groove on the body (corpus or shaft) of the first rib is close to the sternal end?

Answer 9

the groove for the subclavian vein

Question 10

Is either the costal angle or costal groove apparent on the first rib?

Answer 10

Neither the costal angle nor the costal groove are apparant on the first rib