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.📚
The heart is a hollow, cone-shaped, muscular organ. It is a biological pump. Its size is not more than a human’s clenched fist and is made up of specialised cardiac muscles. The heart lies at the centre of the chest cavity, between the lungs and behind the sternum. It is slightly tilted towards the left. […]
Plasma is a straw-coloured fluid. It is composed of 90% of water and less than 10% of various substances in solution which consists of plasma proteins, organic substances and inorganic salts. Plasma acts as the medium for the transmission of nutrients, salts, fats, glucose and amino acids to the tissues. It also acts as the
The red blood cells (RBCs) are also called erythrocytes, which are spherical in shape with a depression in the middle to impart maximum surface area to the cells. The greater the surface area the more they are able to capture oxygen. RBCs get their red colour from oxygenated iron-rich protein haemoglobin. Hence the arteries are
Blood is a fluid tissue composed of two parts: liquid and solid. Plasma is the liquid part, and blood cells like red blood cells and white blood cells are the solid part of the blood. Blood cells float in plasma. Plasma is a straw-coloured liquid. Blood cells are made in the bone marrow. Blood carries
The circulatory system is human body’s transport system. The system consists of the heart, blood vessels and lymphatics. The circulatory system is responsible for: (a) Transport of nutrients and oxygen to the cells; (b) Transport of carbon dioxide and other waste products of cellular respiration; and (c) Circulation of hormones and chemical components and maintenance
Muscles of Leg: There are different types of muscles in the leg. They are: quadriceps femoris, iliopsoas and sartorius in the front and the hamstrings and gluteus maximus at the back. These muscles at the front help bend the thigh, extending the leg at the knee, while those in the back help extend the thigh
Wrist-Finger Flexors: Flexors are the muscles that flex a joint. A wrist and the adjoining fingers have multiple muscles that work together to bring about complex movements. Flexor muscles are found at the front side of the forearm. Flexor muscles help flex the wrist. A few of them are: flexor digiti, flexor retinaculum, etc. These
The rectus abdominus muscle is located on the front part of the body in the abdominal region. These muscles support the forward bending of the back, and they pull the ribs and the pelvis inwards and curve the back. These muscles are also used during bowel movements and coughing. Strengthening of the rectus abdominus muscles
It takes place when we move or we try to push or pull an object. During muscle contraction, the muscle fibres (the light and dark myofibrils) slide over one another and when the muscle is relaxed, after the performance of the movement, the same muscle fibres slide apart. The moment we perform a movement, the
The biceps are two-headed muscles on the front part of the upper arm. They are divided into two parts: the long head and the short head. They are one of the skeletal muscles that help in the movement of the elbow and the shoulder. While lifting the load, the motion of the shoulder and the
Deltoid muscle is found on the uppermost part of the arm. It covers the top of the shoulder joint. It resembles an equilateral triangle in shape. This muscle helps in the movement and rotation of the neck and mainly it provides stability to the shoulder blade. It helps in the lifting and twisting of the
Trapezius muscle is found in the upper and back portion of the neck, shoulders and chest. This is one of the vital muscles of the upper part of the back. It is a large triangular muscle. It extends from the uppermost point of the neck to the spine and the shoulder blade region. The main
EpicraniusMuscles The muscles that cover the skull are the epicranius muscles. The epicranius muscles are comprised of two muscles: the frontalis muscle and the occipitalis muscle. The muscle located on the forehead is the frontalis muscle, while the occipitalis muscle is located on the right and the left side of the skull on the back
Epicranius Muscles, Orbicularis Occuli& Orbicularis Oris Read More »
Smooth muscles are also called visceral muscles as they are present in the internal organs of the body, such as blood vessels, the gastrointestinal tract, the bladder or the uterus. These muscles are responsible for the contraction/movement of the internal organs. The smooth muscles are the weakest muscles and are controlled by the brain. The
Skeletal muscles are the only voluntary muscles in the body. These muscles are connected with the skeleton, hence are called skeletal muscles. These muscles are composed of striated muscle tissues. Somatic nervous system is responsible for every action of these muscles. This is the reason why these are called voluntary muscles. These muscles are usually
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