GSEB Solutions for Class 7 Science and Technology – Musculo Skeleton System (English Medium)
GSEB SolutionsMathsScience
Exercise 86:
Solution 1(a):
There will be no definite shape and structure of the body if there will be no bones in our body.
Solution 1(b):
Elbow, knee, shoulder and wrist have joints.
Solution 1(c):
Shoulder, knee and elbow are flexible joints.
Solution 1(d):
Wrist and leg muscles are inflexible joints.
Exercise 88:
Solution 1(a):
Exercise 89:
Solution 1(a):
Between bones and skin, we find a mass of tissue that contracts and relaxes. This type of tissue is called as muscle.
Exercise 90:
Solution 1:
Skeleton is formed of bones and ligaments.
Solution 2:
Ligaments are located where there are joints in the body such as knee joint and elbow joint.
Solution 3:
Thigh bone is the longest and the strongest bone of the body.
Solution 4:
Spinal cord is protected by the vertebral column.
Solution 5:
Bones of the head or the skull protects the brain.
Solution 6:
There are two types of joints found in our body. They are movable joints and immovable joints.
Solution 7:
Rib cage protects lungs and heart.
Solution 8:
Spinal cord is found in the vertebral column.
Solution 9:
There are two types of muscles found in the body. They are voluntary and involuntary muscles.
Solution 10:
If there were no bones in our body, then there will be no definite structure and posture of the body.