THE CARDIOVASCULAR SYSTEM :

COMPONENTS :

  • HEART

  • BLOOD

  • BLOOD VESSELS


BLOOD:

  • carries oxygen, nutrients , and waste

  • regulates PH balance, temperature & water,

  • blood components help defend against diseases.

  • average human adult body there are 1.20 - 1.5 gallons of blood

  • RED BLOOD CELLS : carries oxygen

  • WHITE BLOOD CELLS : fight infection

  • PLATELETS : play a crucial role in blood clotting and wound healing.

  • PLASMA : liquid portions that transport nutrients, waste and hormones



THIS LEUKOCYTES ;

  • NEUTROPHILS

-2 or 5 lobes ( nucleus)

-kills bacteria

-kills fungi

-kills foreign debris

  • LYMPHOCYTES

-large singular nucleus

-fights viruses and makes antibodies

-makes T and B cells

-makes natural killer cells


  • MONOCYTES:-

-U shape nucleus

-clean up damage cells

  • ELISONIOPHILS-

-2-5 lobes

-red to orange granules ( storage bag)

-kills parasites

-kills cancer cells

-allergic responses

  • basophils

-2 lobes

-obscure nucleus

-allergic reaction

-secrete histamine ( chemical powder inside granules)


BLOOD TYPES

  • O POSITIVE - can give to ( O+,A+,AB+) can receive from (O+ & O-)

  • A+ = can give to ( A+, AB+) can from ( A+,A-,O+,O-)

  • B+ = give ( B+,AB+) receive (B+,B-,O+.O- )

  • AB+ = give ( AB only ) receive ( all blood types)

  • O- = give ( all blood types ) receive ( O- )

  • A - = give ( A+,A- , AB+,AB-) receive ( A-,O- )

  • AB - = give ( AB-, AB+ ) receive ( AB-, A-,B-,O- )


THE HEART :

resting heart rate:

  • adults: 60-100 bpm

  • children : 70-110

  • Infant ts: 100-150

  • heart disease is number one leading death in america.

  • ARTERIES: carries blood away from heart

  • VEINS: carries blood to the heart

  • Capillaries: Tiny vessels where oxygen, nutrients, and waste are exchanged with tissues.

*learn heart diagram and its;s processes*

LEFT VENTRICLE

  • has to generate high pressure to push blood through the entire body,it’s wall much thicker than right wall, ( right pumps blood to lungs)