Un

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/14

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

15 Terms

1
New cards

8 functions of blood

TRANSPORT

Oxygen & nutrient delivery- O2 on the hemoglobin nutrients carried in plasma

Metabolic wastes (CO2 + nitrogenous wastes) carried to lungs and kidneys

Carry hormones in plasma

REGULATION

Maintain normal body temperature = 37C/98.6F

H2O in plasma absorbs heat

Metabolic reactions in cells produce heat

H2O/blood stores this heat

Maintain normal pH through a buffer reservoir of bicarbonate (HCO3-)

pH of blood is 7.35

Adds a H+ in basic conditions

Remove a H+ in acidic conditions

Maintain volume of circulatory system = help maintain BP

PROTECTION

Clot formation to prevent blood loss through platelets and proteins in plasma

Contains immune cells and proteins to fight infections (leukocytes and antibodies)

2
New cards

Characteristics of leukocytes

Nucleated -> can divide/mitosis & increased number outside of bone marrow

Transported in blood or lymph

Should never have erythrocytes

May leave capillaries

Function in immune & defense

3
New cards

What are platelets/thrombocytes and what is their function?

Act in homeostasis -> clot

Fragments of megakaryocytes

Lack nucleus

4
New cards

List and define the stages of hemostasis.

Vascular spasm

Platelet plug formation

Positive feedback

Coagulation

5
New cards

Cardiac output

The volume of blood pumped by each ventricle in 1 minute

6
New cards

Heart rate

beats per minute

7
New cards

Stroke volume

volume of blood ejected from ventricle In 1 minute

8
New cards

Arrythmia

Irregular heart beat, uncoordinated, may be fibrillation (rapid, irregular contractions)

SA node is disrupted by rapid activity in other regions of heart

9
New cards

Vascular spasm

vessel responds to injury by vasoconstriction

Benefit -> reduces blood flow until other mechanisms reduce blood flow

10
New cards

Platelet plug formation

Platelets are drawn to area of injury by chemotaxis

Platelets stick to collagen fibers exposed on broken blood vessel

Positive feedback -> draws more platelets to injury

11
New cards

Positive feedback

draws more platelets to injury

12
New cards

Coagulation

fibrin (from fibrinogen in plasma) forms a mesh that traps erythrocytes and platelets forming a clot

13
New cards

Blood

In blood vessel

Plasma

Formed elements, plasma

Gas exchange

14
New cards

Interstitial fluid

Leaked plasma between tissues

IF

Composition depends upon tissue surrounding it

H2O, sugars, fatty acids, amino acids, coenzymes (vitamins), hormones, neurotransmitters, leukocytes, waste, O2 & CO2

15
New cards

Lymph

Interstitial fluid picked up by lymphatic vessels

Composition depends upon where IF was located

Leukocytes, salts, fats, proteins, H2O