Health 811 – Day _________________
Objectives:
The students will have to find their notes on blood definitions.
The students will learn the different types of exercise.
The students will learn about the respiratory system.
Attendance/Settle (5)
Define: (45)
Blood is the fluid by which essential substances are transported to cells throughout the
body. Blood is also the means by which waste materials are removed from the body cells and
transported to specific organs for disposal.
The liquid part of the blood is called plasma. Plasma is about 90% water and contains
dissolved materials, including nutrients. Plasma also contains blood cells.
Hemoglobin is the substance that combines with oxygen and gives blood its red color.
White blood cells destroy germs or substances that enter your body and might cause
infection. Normally, there is about one white cell for every 500 – 1000 red cells. However,
when harmful microorganisms enter the body, more white cells are produced. The white cells
surround these organisms, destroy them, and remove the remaining wastes.
Platelets are blood cells that help form clots to prevent blood from leaking from injured
vessels.
Hemophelia is a disease in which blood clots form too slowly or not at all.
Arteries are the vessels that carry oxygen rich blood to organs in the body.
Veins are the vessels that carry the dark bluish oxygen poor blood back to the lungs and
heart.
As blood flows through capillaries, some liquid enters into spaces between the body cells.
The clear liquid is lymph. Lymph belongs to a part of the circulatory system called the
lymphatic system. The lymphatic system contains structures that serve to filter harmful
organisms in the body. These structures are called lymph nodes.
Each heartbeat represents a sequence of events called the cardiac cycle.
Blood pressure is the force exerted by the flowing blood against the walls of the arteries.
A sphygmanamometer is an instrument that measures blood pressure.
A stethoscope is an instrument that enables a physician to hear sounds inside a person’s
body.
A pulse is a rhythmic expansion of an artery.
When a pulse is heard, a physicain will check a gauge on the sphygmanamometer to
record the measurement. This is called systolic pressure. The physician will continue to deflate
the cuff until the sound of the pulse is no longer hears. This measurement is the diastolic
pressure.
Systolic
Diastolic
If your blood pressure is high, you could have a heart attack or a stroke.
If your blood pressure is low, you could pass out or be very disoriented.
Different Types of Exercise (35)
1. Aerobic – exercise that involves continuous physical activity lasting for at least 10
minutes. This type of exercise improves breathing and blood circulation.
2. Anaerobic – exercise is intense physical activity that lasts only a few seconds to a few
minutes. This type of exercise improves muscle strength.
3. Isotonic – exercise involving the contraction and relaxation of muscles through the
full range of their motion.
4. Isometric – exercises in which a muscle contracts but does not shorten. (No
movement.)
5. Isokinetic – exercise are forms of exercise that make use of special types of weight
training machines.
Questions/Release/Assignments (5)
Fun Facts:
A human heart pumps 3, 475 gallons of blood per day
Each adult body has 1000 miles of vessels
Each body has approximately 10 pints of blood
The body produces 200 billion red blood cells per day
A human can lose 4 pints of blood before the body starts shutting down (40%)
If a human was like a vampire bat they would need 180 cans of blood per day.
Plasma has no nutritional value. It is just the liquid part of the blood.
Other Fun Facts:
Bed Bugs: come out for the CO2, wafer thin until fed. Within 5 seconds they can be engorged
of 7xs their weight. That is 120 gallons for a human or what equals 7 kegs.
Assassin Bug: On chicken and goats. They can drink 6x their body weight in blood.
Flea: They sense movement. Very poor eye sight. Jumps 150x their own body length. Their
mouth has 2 blades. They drink 15x their own body weight in blood. For humans they would
have to jump 700 feet.
Tic: 850 species, 8 legged, ¼”, attracted to body heat and CO2. Can drink 600x their body
weight in blood. That is approximately like the contents of a swimming pool in their lifetime
(10,000 gallons)
Mosquitoes: Females bite when they want to breed. Drink 1 1/2 x their weight in blood
Leech: Drinks 5x its body weight in blood, 400,000 gallons of blood per year. Used now for
some post operative micro-procedures to decrease swelling and stop blood clotting. They have 3
jaws. Hungry leech aids healing.