Question

_____________ system gives shape and support to our body.
A) Muscular
B) Nervous
C) Skeletal
D) Respiratory

Answer 1

Hint:Bones and cartilages are the structures which make the framework of the body. So the system consisting of them will be the correct answer to this question.

Complete Answer:
The internal framework of the human body consists of the skeletal system. It comprises around 270 bones at birth which by adulthood decreases to around 206 bones as some of the bones get fused together. Around age 21, the bone mass in the skeleton reaches its maximum density. The human skeletal system is divided into an axial skeleton and the appendicular skeleton. The vertebral column along with the rib cage, the skull and other associated bones forms the axial skeleton. The appendicular skeleton is attached to the axial skeleton, it includes the shoulder girdle, the pelvic girdle and the bones of the upper and lower limbs.
There are six major functions performed by the skeletal system which are-
->Support
->Movement
->Protection
->Production of blood cells
->Storage of minerals
->Endocrine regulation.
Subtle differences can be observed between sexes in the morphology of the skull, dentition, several long bones, and pelvis. The skeleton is found to be sexually dimorphic in many species but it is not severe in case of humans. Within a given population, skeletal elements in females tend to be smaller and less robust as compared to male elements. In order to facilitate childbirth, pelvis is also different in females in comparison to that present in males. Humans lack penile bones which are present in other primates.

Thus the correct answer is- C. skeletal system.

Note: The axial skeleton has 80 bones. The vertebral column has 32-34 bones, 12 pairs of ribs and a sternum, and the skull is composed of 22 bones along with 7 associated bones while the appendicular skeleton is composed of 126 bones.