Tag: body movements

A hinge joint is a common class of synovial joint that includes the ankle, elbow and knee joints. Hinge joints are formed between two or more bones where the bones can only move along one axis to fold or extend. The elbow is a more complex hinge joint that forms between the humerus of the upper arm and the ulna and radius of the forearm. So, the correct answer is 'Hinge'.

• The bones of the arm or forelimb are humerus, radius and ulna, carpals (wrist bones – 8 in number), metacarpals (palm bones – 5 in number) and phalanges (digits – 14 in number).
  
• Hence radius is bone of arm.
• So, the correct answer is 'Arm'.

• The bones of the hand (forelimb) are humerus, radius and ulna, carpals (wrist bones – 8 in number), metacarpals (palm bones – 5 in number) and phalanges (digits – 14 in number),
  
• The ulna is a long and curved bone.
  
• Proximally, the ulna articulates with the humerus at the elbow joint. Distally, the ulna articulates with the radius, forming the distal radio-ulnar joint.
• So, the correct answer is 'Long and curved bone'.

The humerus is the long bone in the upper arm. It is located between the elbow joint and the shoulder. So, the correct option is C.( Humerus )

Ribs serve to protect the lungs, heart, and other internal organs of the thorax. In some animals, especially snakes, ribs may provide support and protection for the entire body.

The skeleton serves a number of functions in vertebrates:

• The skull is composed of two parts: the cranium and the mandible.
•  In the human, cranium has two parts the neurocranium and the viscerocranium. 
• The neurocranium forms the cranial cavity that surrounds and protects the brain and brainstem. 
• The neurocranium consists of the occipital bone, two temporal bones, two parietal bones, the sphenoid, ethmoid, and frontal bones—all are joined together with sutures. Hence, The brain is protected by the Cranium.