Tashkent pediatric medical institute foreign languages department education branches

TASHKENT PEDIATRIC MEDICAL INSTITUTE FOREIGN LANGUAGES DEPARTMENT

Education branches:

Pediatrics

Therapy

Professional education

Course: 1

Theme : Corpuscular elements of blood

Lesson: № 3

Instructor : Makhametova M.M.

Look at the diagram and share your preferences about Corpuscular elements of blood, and, consider the questions.

What is blood?

What is the blood composed of?

How do we call the blood platelets?

How do we call the white corpuscles?

How many leucocytes are in the blood of healthy person?

When is the count of leucocytes increased?

Why are the red corpuscles (erythrocytes) very important in the function of respiration?

Assignment 2.After reading the text identify the meaning of the new words and word combinations revising Participles.

• Everybody looked at the lying patient, breathing with difficulty.
• Assistant watched the surgeon operating the patient.
• Doing operation or any med. procedure you should be attentive.
• Learning a foreign language you must have much practice.
• Examining the patient the doctor was filling in the patient’s history.
• Everything written in the chart must be correct and accurate.
• The lost child was found.
• Here is the patient operated by me yesterday.
• Listening to the lecture I learned a lot.
• Yesterday we were at the conference organized by WHO.

The Corpuscular Elements of Blood

• The Corpuscular Elements of Blood
• Blood is a fluid tissue with many various functions. Not only important physiological process takes place in the blood but it determines the activity of widely separated body cells.
• Blood is composed of plasma and the corpuscular elements which are called red. It is generally considered that no sex differences exist in the count of white corpuscles or leucocytes. The count of leucocytes in the blood of a healthy person is 4,500 to 9,500 per cu mm (cubic millimeter). When the number of white blood cells (WBC) is counted after mental or physical exertion, meals and mild activity it may increase to 10,000 and more per cu mm.
• It is estimated that the erythrocytes are the most numerous cellular elements, ranging from 4,000,000 to 5,000,000 per cu mm. The red blood cell count (RBC) may change with age; when the red blood cell count is done after physical exertion and emotions it may increase.

One knows that red corpuscles have two physical features which are very important in the function of respiration. They have great elasticity and flexibility. These features give them the possibility to pass through very small capillaries. The discoid form of the corpuscle gives it a maximal surface for a given mass.

• One knows that red corpuscles have two physical features which are very important in the function of respiration. They have great elasticity and flexibility. These features give them the possibility to pass through very small capillaries. The discoid form of the corpuscle gives it a maximal surface for a given mass.
• The most important part of the red cell is its red colouring substance or hemoglobin which on an average forms about 36% of its mass.
• The total blood volume is divided into circulating and reservoir volumes.
• The average human blood volume is not less than 7.5% but not more than 10% of the body weight. It is generally stated that the circulating volume averages smaller in the females than in the males. The circulating volume of the blood depends on the changes of the air temperature.

While reading try to share your preferences by consider the questions Do you know anything about blood transfusion and blood type? Why it is very important? Blood is so important to life that someone who loses too much blood dies. Doctors Can put ones blood into the body of another in a process called a blood transfusion. Transfusions are often used in surgery. Sometimes they are needed by a person who has had an accident. To give someone’s blood to another person, doctors must be sure that the two people’s blood is of the same type. Someone with the right type of blood need not be on hand for a transfusion. Blood can be given at any time, then frozen and stored for a long time. The places where blood is given and stored are called blood banks.

Blood type.

Blood type.

• There are two ways of looking at blood type.- the ABO system and the Rh system. The ABO system has four different groups. Blood can be type A, type B, type AB or type O. The Rh system has two groups, called Rh-positive and Rh-negative. Someone with Rh-positive blood can receive only that type of blood. The same is true of Rh-negative blood. People with type O blood can give blood to anyone with the same Rh factor. People with AB blood can receive blood from anyone with the same Rh factor. Those with type A or B blood can receive blood from people with either the same blood type or type O, as long as the blood has the same Rh factor.

State whether the following characteristics describe rbc, wbc, or platelets: