 The circulatory system is an  organ system that passes  nutrients gases, hormones, blood  cells, etc. to and from cells ...
HeartBloodBlood Vessels
 The  Heart is a muscular organ found in all  animals with a circulatory system, that is  responsible for pumping blood t...
Structure of Heart• The human heart has four  chambers, two superior atria and  two inferior ventricles. The atria  are th...
Blood Blood is a specialized fluid that delivers  necessary substances to the bodys cells such  as nutrients and oxygen a...
RBCs – Red Blood Cells   Red blood cells (erythrocytes) are the most    common type of blood cell and the vertebrate    o...
   White blood cells (leukocytes) are cells of the    immune system involved in defending the    body against both infect...
   Platelets or thrombocytes are small,    regularly-shaped clear cell fragments (i.e.    cells that do not have a nucleu...
Platelets
Blood Vessels The blood vessels are the part of the  circulatory system that transport blood  throughout the body. There...
 Arteries are blood vessels that carry  blood away from the heart. This blood is  normally oxygenated, exceptions made  f...
ARTERIES
Capillaries Capillaries are the smallest of a bodys blood vessels and are parts of the microcirculation. They are only 1 ...
   In the circulatory system, veins are blood    vessels that carry blood towards the    heart. Most veins carry deoxygen...
Veins
   The heart beats around 3 billion times in the    average persons life.   About 8 million blood cells die in the human...
Circulatory system
Circulatory system
Circulatory system
Circulatory system
Upcoming SlideShare
Loading in …5
×

Circulatory system

1,283 views
1,232 views

Published on

Published in: Business, Technology
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,283
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
99
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Circulatory system

  1. 1.  The circulatory system is an organ system that passes nutrients gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases and help stabilize body temperature. This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood.
  2. 2. HeartBloodBlood Vessels
  3. 3.  The Heart is a muscular organ found in all animals with a circulatory system, that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions. The vertebrate heart is composed of cardiac muscle. The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during an average 66 year lifespan, and weighs approximately 250 to 300 grams in females and 300 to 350 grams in males.
  4. 4. Structure of Heart• The human heart has four chambers, two superior atria and two inferior ventricles. The atria are the receiving chambers and the ventricles are the discharging chambers. The right ventricle discharges into the lungs to oxygenate the blood. The left ventricle discharges its blood toward the rest of the body via the aorta.• Blood flows through the heart in one direction, from the atria to the ventricles, and out of the great arteries, or the aorta for example. This is done by four valves which are the tricuspid valve, the mitral valve, the aortic valve, and the pulmonary valve
  5. 5. Blood Blood is a specialized fluid that delivers necessary substances to the bodys cells such as nutrients and oxygen and transports waste products away from those same cells. Vertebrate blood is bright red when its hemoglobin is oxygenated. Blood has 3 parts – a)RBCs b)WBCs c)Platelets
  6. 6. RBCs – Red Blood Cells Red blood cells (erythrocytes) are the most common type of blood cell and the vertebrate organisms principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system. They take up oxygen in the lungs or gills and release it while squeezing through the bodys capillaries. These cells cytoplasm is rich in haemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the bloods red color.
  7. 7.  White blood cells (leukocytes) are cells of the immune system involved in defending the body against both infectious disease and foreign materials.Five different and diverse types of leukocytes exist, but they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell. Leukocytes are found throughout the body, including the blood and lymphatic system.
  8. 8.  Platelets or thrombocytes are small, regularly-shaped clear cell fragments (i.e. cells that do not have a nucleus containing DNA), which are derived from fragmentation of precursor. The average lifespan of a platelet is normally just 5 to 9 days. Platelets play a fundamental role in hemostasis and are a natural source of growth factors. They circulate in the blood of mammals and are involved in hemostasis, leading to the formation of blood clots.
  9. 9. Platelets
  10. 10. Blood Vessels The blood vessels are the part of the circulatory system that transport blood throughout the body. There are three major types of blood vessels: a)Arteries b)Capillaries c)Veins
  11. 11.  Arteries are blood vessels that carry blood away from the heart. This blood is normally oxygenated, exceptions made for the pulmonary artery. The circulatory system is extremely important for sustaining life. Its proper functioning is responsible for the delivery of oxygen and nutrients to all cells, as well as the removal of carbon dioxide and waste products.
  12. 12. ARTERIES
  13. 13. Capillaries Capillaries are the smallest of a bodys blood vessels and are parts of the microcirculation. They are only 1 cell thick. These micro vessels, measuring 5-10 in diameter, connect arterioles and venules, and enable the exchange of water, oxygen, carbon dioxide, and many other nutrient and waste chemical substances between blood and surrounding tissues.
  14. 14.  In the circulatory system, veins are blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart.
  15. 15. Veins
  16. 16.  The heart beats around 3 billion times in the average persons life. About 8 million blood cells die in the human body every second, and the same number are born each second. Within a tiny droplet of blood, there are some 5 million red blood cells.

×