The hip bone has two hollow spaces called p whereas the upper ends of the thigh bones are round in shape at our hip the upper ends of two thigh bones fit into empty space p to form joint q a what are the empty spaces p in hip bone known as by what type of joints are q c how does joint q differ from a knee joint
Answers
Answer:
Explanation:
Movements: A change in the position of any object is called movement. Many movements take place in our body and also in other organisms’ body.
Locomotion: When movement results in change of position of the whole organism, it is called locomotion.
Examples of Movements in the Human Body:
Movement of eyelids
Movement of the heart muscles
Movement of teeth and jaw.
Movement of arms and legs.
Movements of head.
Movements of neck.
Movement of some organs happens because of the teamwork of bones and muscles. In such cases, movement is possible along a point where two or more bones meet.
Joints
The location where two or more bones meet is called a joint. Ligaments bind a bone to another bone. Tendons bind a bone to a muscle.
Types of Joints
Fixed joints: The joints where no movement of bones is possible are called fixed joint. The joints in the skull bone (cranium) are examples of fixed or immovable joints.
Moveable joint: Movement is possible in these joints. There are two types of movable joints:
Freely movable joints and
Partially movable joints.
There are four types of movable joints in the body; which are as follows:
Ball and socket joint: In this joint the rounded end of one bone fits into the cavity (hollow space) of another bone. It permits movement in all directions. The joints between shoulder and the upper arm is an example of ball and socket joint. Similarly, the joint between thigh and hip is an example of ball and socket joint.
Pivot Joint: This type of joint allows movements in many planes, viz. up and down, side to side movements. The joint between the skull and the vertebral column is an example of pivot joint.
Hinge joint: This joint is similar to the hinges in a door. This joint allows movement only in one plane and only up to 1800. The knee joint and elbow joint are examples of hinge joint.
Gliding joints: The movement in this joint happens due to sliding of bones over one another. Joints between the rings of the backbone are examples of gliding joint. The wrist joint is also an example of gliding joint.
Skeleton
The framework of bones and cartilage which gives shape and support to the body an animal is called skeleton. The human skeleton is made up of 206 bones. While the bones are hard, cartilages are soft. Cartilage is found between joints and in some elastic organs; like ear lobe and nose. Cartilage reduces friction between a joint.
Various organs of the skeletal system
Chest bone or Rib Cage: It forms a cone- shaped bony cage. The bones of the cage are called ribs. There are 12 pairs of the ribs. They attached to the vertebral column. The rib-cage protects the lungs and the heart.
Backbone or Vertebral Column: The vertebral column extends from the base of the skull to the hip. It consists of 33 small rings; called vertebrae which are joined from end-to-end.
Shoulder bone or Pectoral Girdle: The shoulder bone is formed by the collar bone and the shoulder blade. It is attached to the upper part of the rib-cage and to the upper arm bone.
Hip Bone or Pelvic Girdle: It is formed by the fusion of three bones, the hip bones and the tail parts of the backbone; to from a large bony bowl. The thigh bones are attached to the hip bone.
Skull: The skull is at the top of the vertebral column. It is composed of two main parts.
Cranium: The cranium gives protection to the brain. The bones of the cranium are flat and are held firmly in a Zipper- like manner. The joints of the cranial bones are fused joints.
Facial bones: These bones make the front and the lower part of the skull. The lower jaw bone or mandible is the only movable bone; which helps us to chew, eat and talk.
Answer:
P is called Cavity and Q is called ball and socket joint
Explanation:
The hollow spaces in the hip bone are called cavity.
The thigh bones fit into the cavity to form a ball and socket joint.