Human Body Flashcards
(21 cards)
What is the circulatory system?
The system which consists of blood, blood vessels and heart is the circulatory system.
Why is blood red in colour?
The red colour of the blood is due to the presence of a pigment called haemoglobin.
What are major components of blood?
Plasma, Platelet, WBC(White Blood Cell), RBC(Red Blood Cell)
What is Plasma in blood?
The liquid part of blood. Pale yellow in colour. Carries glucose to the cells.
What do Platelets do?
Helps in blood clotting.
What is WBC?
White Blood is a component of blood. It has no definite shape , has nucleus and destroys pathogens.
What is RBC?
Red Blood cell is a component of blood. It is disc shaped, non- nucleated, contains haemoglobin, transports oxygen and carbon dioxide
What are arteries?
Arteries are the blood vessels that carry oxygen-rich blood from the heart to different parts of the body.
What are veins?
Veins are the blood vessels that carry carbon dioxide - rich blood from different parts of the body to the heart.
What are capillaries?
Capillaries are the thin blood vessels that copnnect arteries and veins.
What is heart?
Heart is the centre of the circulatory system. It pumps blood to all parts of the body.
What is pericardium?
The heart is covered by a double layered membrane called pericardium.
How many chambers does human heart has?
Human heart has four chambers.
What is heartbeat?
Heartbeat is defined as the rhythmic contraction and relaxation of heart muscles.
How many times does heart of a healthy adult beats per minute
72 times.
What instrument the doctor use to check heartbeat?
Stethocsope.
What is excretion?
Excretion is process of elimination of urea, excess water, salts etc that are produced in the body as a result of life processes.
What are kidneys?
Kidneys are the most important excretory organs in our body. Kidneys are bean-shaped and are located in the abdominal cavity on either side of the vertebral column. Waste products in blood filtered by kidneys are eliminated through urine.
What are kidney transplantation?
Kidney transplantation is the process of transplanting one kidney from a healthy donor to a person whose both kidneys are impaired. Kidney transplantation will be possible blood group of the donor and recipient, are compatible.
What is sweat?
Sweat is produced by sweat glands in skin. Excess water and salt in the body are eliminated through sweat. The heat to evaporate sweat is taken from our body. Sweating thus helps in our temperature regulation.
