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Anatomy > Blood > Flashcards

Flashcards in Blood Deck (25):
1

Functions of the circulatory system

1. Transport (Of respiratory gases, nutrients, hormones, wastes. 2. Regulation(pH, Temp, fluid balance) 3. Protection

2

Components of whole blood

Plasma+formed elements. Formed elements=erythrocyes. Buffy Coat=leukocytes and platelets Plasma: Liquid matrix of blood CT.

3

Protein in plasma

Albumins: buffers. Largest impact on viscosity Globulins: Alpha and beta transpost lipid soluble materials. gamma are anibodies Fibrinogens: become fiber to help with clot formation

4

Physical characteristics of blood

Color: Scarlet with O2 or dark red without O2 Volume: 4-5 L or 5-6 L Viscosity: 4.5-5.5 x Temperature: 38 C or 100.4 F

5

Hemopoisis

.

6

Erythropoiesis

Stimulus: low O2 levels in blood. Receptor: Kidney Control center: Kidney releases EPO (Erythropoietin) Effector: EPO stimulates red bone marrow to increase rate of production of erythrocytes

7

Components of hemoglobin

heme binds O2. Globin binds CO2. Hemoglobin carry 4 O2 molecules. There are approximately 200-300 million per RBC

8

Erythrocyte recycling May need to update

1. Erythrocyte forms in Red bone marrow. 2. Circulate for 120 days 3. macrophages in the liver break a parts old cells into globin, Fe2+, and heme. 4. Heme is excreted through feces. Some Fe is lost, some gets transported by transeferrin into red bone marrow. Globins are broken down into amino acids and enter blood. Some gets recycled.

9

Blood typing

Explain

10

Antigens

Substance that can elicit an immune response

11

self antigens

merk cells as self

12

antibodies

protein that bind to antigens to mark for removal from the system.

13

Formation of Leukocytes

leukopoiesis

14

Neutrophils

WBC phagocytic for bacteria

15

Eosinophils

WBC fight parasitic worms

16

Basophils

WBC involved in inflammatory response. Release histamines.

17

Lymphocytes

Attack pathogens and abnormal and infected cells

18

Monocytes

Become Macrophages and eat foreign objects.

19

Platelet functions

1. Secrete vasoconstrictors 2. stick to collagen and each other to form platelet plug 3. Secrete chemicals to attract more platelets. 4. Secrete chemicals to attract neutrophils and monocytes. 5. secrete procoagulants to help clot 6. secret enzymes to break down clot 7. secrete chemicals that stimulate mitosis for tissue repair.

20

Hemostasis

Blood vessel constricts to limit blood loss. platelet plug formation occurs when platelets attach to exposed collagen fibers. Coagulation phase. Coagulation cascade converts inactive proteins to active forms and forms a blood clot

21

WBC phagocytic for bacteria

Neutrophils

22

WBC fight parasitic worms

Eosinophils

23

WBC involved in inflammatory response. Release histamines.

Basophils

24

Attack pathogens and abnormal and infected cells

Lymphocytes

25

Become Macrophages and eat foreign objects.

Monocytes