221 Human Body Parts Encyclopedia presents info about all human parts including stomach, legs, ear, hands and every part. Read with your little ones and help them understand how human body functions.📚
Cardiac muscle is a unique type of muscle that is found only in the heart. These muscles are formed by specialised muscle tissues, composed of striated cells. These cells help the heart to pump the blood to the entire body. The pumping of blood is possible due to the contraction of the heart muscles. These […]
Muscles consist of several muscle bundles. These muscle bundles are composed of several muscle fibres or myocytes. They are held together by a layer of connective tissue and are lined by sarcolemma. Each muscle fibre is composed of several parallely arranged strands called myofibrils. The myofibrils contain two important proteins: actin and myosin. The striated
The muscular system is mainly responsible for the movement of the body. The muscles help carry out everyday activities such as walking and sitting. This system supports maintenance of the posture and stability of the joints. The muscles in the body help generate heat necessary for various metabolic functions. There are more than six hundred
A saddle joint has an interesting arrangement of bones in it. In this joint, one bone is shaped like a saddle with the other bone resting on it like a rider on a horse. These joints are much balanced and stable joints as compared to the hinge joint. The best example of a saddle joint
In a pivot joint, one bone moves without disturbing other bones. This joint is found between the head and the neck. This joint is also called the rotatory joint that allows only rotational movement, as in case of the movement of the head. One can turn one’s head from right to left or from left
The other class of synovial joints are the hinge joints. A hinge joint works like a hinge fixed to a door or window. A hinge joint allows bones to move in one direction, that is only a backward and a forward motion. In the human body, we can find the hinge joints between the bones
A gliding joint is also referred as a plane or planar joint in which two flat surfaces of a bone move smoothly on each other. In this type of joint, the connecting surfaces of the involved bones are flat or slightly curved. These joints allow only gliding movement. These are found between the carpal bones
The ball and socket joint or sphere-shaped joint is a joint in which one of the bones is round like a ball. The round bone fits into another bone which resembles a socket. The round bone rotates within the socket bone. This type of joint permits the bone to move in all directions. The two
The synovial joints are the freely movable joints. The characteristics of a freely movable joint are: (1) the ends of bones which enter into the formation of the joints are covered by hyaline cartilage. (2) Ligaments are required to bind the bones together. (3) There is a joint cavity that is enclosed by a capsule
Cartilaginous joints are slightly movable joints in which the joint surfaces are joined by cartilages. The joints between the vertebrae in the spine and joints between the ribs are the common examples of the cartilaginous joints. The injury in the cartilage causes pain in the cartilaginous joints. The pain in the joints and stiffness is
Fibrous joints are immovable or fixed joints in which no movement is possible. These joints are made of tough collagen fibres. Fibrous joints are found in: (1) the sutures (joints between the skull plates) of the skull; (2) the peg and socket joint found between the teeth and their bony sockets; and (3) the radio-ulnar
Tendon is a soft fibrous connective tissue which makes a link between the muscles and the other parts of the body, especially the bones. The main function of tendon in our body is to move the bone. The spindle-shaped fibrous tissues are called fibrocytes. The collagenous fibres present in the tendons provide them with the
A joint is the place where two bones meet or the point where the bones meet the cartilage. The bones are held together at the joint by ligaments. Joints allow us to twist, turn and move our rigid skeleton. The movement of the joint is facilitated by the adjoining muscles. These muscles exert a certain
The foot is the base of the human leg. There are 26 bones and more than 100 muscles in the human foot. This network makes the human foot a complex part. The bones of the foot are arranged into three parts: the tarsal bones, metatarsal bones and phalanges. The metatarsal bones form the body of
Thigh The bones of the lower limbs are connected with the trunk by means of the pelvic girdle. The lower limb supports the body; they help to maintain balance and mobility. The part between the hip and the knee is referred as the thigh. The bone of the thigh is the femur bone, which is