1. Blood & Blood Vessels
by a professor named...

2. Respiratory System (Credit: Mr Parr & One Direction)

3. The Heart Song (Credit: Mr Parr)

4. Blood & Blood Vessels Questions to Master
Name the 3 types of blood vessels and describe the differences
Describe the 4 parts of blood

5. 2/1/2019
Blood Vessels
Form a closed circuit of tubes that carry blood throughout the body
Laid end to end, the blood vessels in an average human body will stretch approximately 62,000 miles……2.5 times around the earth
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

6. Blood Vessels Have characteristic features
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Blood Vessels
Have characteristic features
Are distinguished by size, tissue layers and direction of blood flow
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

7. Blood Vessels There are 3 types of blood vessels a. Artery b. Vein
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Blood Vessels
There are 3 types of blood vessels
a. Artery
b Vein
c Capillary
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

8. Classes of blood vessels
Arteries and arterioles carry blood away from the heart.
Veins and venules carry blood to the heart.
Capillaries allow exchange of nutrients, wastes and gases.
01/02/2019

9. Blood Vessels Arteries Receive blood from ventricles
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Blood Vessels
Arteries
Receive blood from ventricles
Take blood away from the heart
Usually carry oxygenated blood
Thickest vessel walls
Withstand greater blood pressure
Are very elastic
Connect to capillaries
Aorta is the largest artery
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

10. Arterioles Arterioles branch off of arteries.
Arterioles can constrict to direct and control blood flow. They may, for example, increase or decrease blood supply to the skin.
01/02/2019

11. Blood Vessels Capillaries Smallest of blood vessels
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Capillaries
Smallest of blood vessels
Only one cell thick (epithelial cell)
Connect arteries to veins
Bring oxygen and nutrients to cells
Removes CO2, urea, and other wastes from cells
Where blood is under low pressure and moving slowly
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

12. Capillary A collection of capillaries is known as a capillary bed.
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Capillary
A collection of capillaries is known as a capillary bed.
artery
vein
capillaries
body cell
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

13. Blood Vessels Veins Transport blood away from capillaries
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Blood Vessels
Veins
Transport blood away from capillaries
Carry blood toward heart
Take blood to atria
Have valves
Thinner vessel walls with less smooth muscles
than arteries
Can stretch a great deal
Have larger diameters
Usually carry de-oxygenated blood
Vena cava is the largest vein
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

14. Veins Veins have thinner walls than arteries.
Veins have fewer smooth muscle cells, but do have valves. How do valves and the skeletal muscles help veins function?
01/02/2019

15. Blood Vessels
2/1/2019
Calf muscle
relaxed
contracts
Muscle
squeezes veins
Veins constrict;
blood moves;
valves open
Veins dialated;
blood still;
valves closed
Valves
OPEN
CLOSED
The contraction of muscles compressing veins helps push blood up through the leg veins back to the heart. The valves allow the blood to flow towards the heart only.
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

16. 2/1/2019
Blood Vessels
Arteriole
Venule
Tissue cells
Vein
Artery
capillaries
Capillaries
A network of capillaries runs close to the cells in every part of the body. The capillaries have very thin walls which allows nutrients to diffuse through into the tissues and waste products to filter back into the capillaries.
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

17. w3.uokhsc.edu
01/02/2019

18. 2/1/2019
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

19. 4 parts of the blood and their functions

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Blood
A circulating connective tissue consisting of several types of cells in a fluid called plasma.
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

21. 2/1/2019
Blood
This is an actual picture of White Blood Cells, in with some red blood cells.
Purple = platelets
Green = white cell
Yellow= white cell
*seen through a
scanning electron
microscope
*our microscopes
were light
microscopes –
compound light microscopes to be exact because they had 2 lenses
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

22. what’s in BLOOD digested food red blood cells white blood cells oxygen
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what’s in
digested food
red blood cells
white blood cells
BLOOD
oxygen
waste (urea)
platelets
carbon dioxide
hormones
plasma
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

23. Blood What percent of your body is blood? 8%
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Blood
What percent of your body is blood?
How much blood do we contain?
On average 4-6 liters
We contain about a pint of blood for every 15 pounds of body weight
Composition of Blood:
What percent of your blood is made of cells?
What percent of your blood is plasma? 8%
45%
55%
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

24. Blood Functions of blood: Supply oxygen to body cells
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Blood
Functions of blood:
Supply oxygen to body cells
Supply glucose (& other nutrients) to body cells
Removal of wastes such as (CO2 , urea, lactic acid) from cells
Immune system functions
*circulates white blood cells
*detects foreign material (invaders) by antibodies
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

25. Blood What is plasma? A clear, straw colored fluid
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Blood
What is plasma?
A clear, straw colored fluid
What percent of plasma is water?
What’s in plasma?
Buffy coat leukocytes
and platelets
(<1% of whole blood)
Erythrocytes
(45% of whole blood)
Plasma
(55% of whole blood)
Formed
elements
90%
Dissolved gasses
Vitamins
Minerals
Salts
Nutrients
Enzymes
Hormones
Waste products
Plasma proteins
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

26. Plasma Plasma contains useful substances like glucose proteins
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Plasma
Plasma contains useful substances like
glucose
proteins
minerals
vitamins
hormones
It also contains
carbon dioxide
waste materials
A straw-coloured liquid that carries the cells and the platelets which help blood clot.
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

27. Blood The cellular components are:
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Blood
The cellular components are:
red blood cells (erythrocytes)
white blood cells (leukocytes)
platelets (thrombocytes)
Blood cells are formed in bone marrow
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

28. Blood Red Blood Cell Characteristics (RBC)- Erythrocyte
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Blood
Red Blood Cell Characteristics
(RBC)- Erythrocyte
Biconcave disks
No nucleus
Contain the iron based pigment hemoglobin which collects oxygen to transport it
Life span about 120 days
5 billion/1mL of blood = most numerous
Are very small
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

29. Blood White Blood Cell Characteristics (WBC)- Leukocyte
2/1/2019
Blood
White Blood Cell Characteristics
(WBC)- Leukocyte
No definite shape
Have nucleus
Protect body against infection
Life span varies (3 days-a few months)
7,000/1mL of blood
Numbers increase if infection is present
Larger than RBC’s
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

30. Blood Types of white blood cells: Macrophage
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Blood
Types of white blood cells:
Macrophage
This diagram shows a cell dying on the left and the white blood cells (called macrophages) consume and digest what is left of the cell
One function of a macrophage is to phagocytize (engulf and then digest) any disease-causing .
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

31. Blood Platelet Characteristics: Thrombocyte RBC fragments
2/1/2019
Blood
Platelet Characteristics:
Thrombocyte
RBC fragments
Irregularly shaped
No nucleus
150, ,000/1mL
Life span about 7-11 days
Have a sticky surface
Responsible for blood clotting (injury healing)
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

32. Platelets Platelets come to the rescue when you injure your skin
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Platelets
Platelets come to the rescue when you injure your skin
Platelets produce tiny fibres to form a net.
This net traps other blood cells to form a blood clot.
We call this a “scab”.
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

33. Blood Red blood cells and platelets are the most numerous.
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Blood
Red blood cells and platelets are the most numerous.
Of the leukocytes, neutrophils are the most numerous
Lymphocytes are the predominant cell type responsible for immune responses.
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

34. Blood Types of white blood cells: Monocytes are the largest
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Blood
Types of white blood cells:
Monocytes are the largest
Neutrophils are the most numerous
Lymphocytes are produced by the lymph tissue
Basophils release histamines
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC

35. Blood B L F O O R D M A C T E I N 2/1/2019
01/02/2019
Dr Tayyaba Faisal Anatomy Dept AMC