Which of the following is not true about ribs of human?

Which of the following is not a part of rib cage?

Given below is a diagrammatic representation of vertebral column

Which of the labelled structure forms thoracic cage?

1. A

2. B

3. C

4. D

Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation.

(1) X = 12, Y = 7           True ribs are attached, dorsally to 

                                      vertebral column and ventrally to

                                      the sternum.

(2) X = 12, Y = 5           True ribs are attached dorsally to

                                      vertebral column and sternum on

                                      the two ends.

(3) X = 24, Y = 7           True ribs are dorsally attached to

                                      vertebral column, but are free on

                                      ventral side.

(4) X = 24, Y = 12         True ribs are dorsally attached to 

                                      vertebral column, but are free on 

                                      ventral side.

Which of the following ribs have direct attachment with the sternum?

Hyaline cartilage connects which of the following ribs pair directly to the sternum?

Hyaline cartilage helps in the attachment of

True ribs are

Floating ribs are not

Which one of the following items gives its correct total number?

1.  Floating ribs in humans           - 4 

2.  Amino acids found in proteins  -16

3.  Types of diabetes                   - 3

4.  Cervical vertebrae in humans  - 8