Perfusion and heart rate Homeostasis

Question 1

Perfusion

Answer 1

Main goal of the arteriole System
Provide adequate blood flow
Through capillary beds
Ensures adequate O2

Question 2

What is the broad function of CV system?

Answer 2

1. delivers substances
2. removes Co2 and metablic end products
3. Temperature homeostasis

Question 3

What are two systems that control the heart rate?

Answer 3

-The conduction system

-cardiac center and autonomic nervous system

Question 4

What are the structures of the conduction system?

Question 5

How does conduction system work?

Question 6

What is the role of the cardiac centre in heart rate maintainence?

Answer 6

it co-ordinates the autonomic nerve supply of the heart
injury or disorder in CC heart would stop beating imediatly

Question 7

What is the role of the autonomic nervous system on the heart rate?

Answer 7

regulates normal heart rate and can adjust to meet demands
Parasympathetic- maintains normal
sympathetic increase heart rate

Question 8

What is the range of heart rate in an adult?

Answer 8

50-90 bpm

Question 9

What are the difference in heart rates in adults and children?

Answer 9

Childrens = higher
falls as they get older

Question 10

Hypoxia

Answer 10

Broad term used for condition where oxygen demand exceeds suply (ATP production dimishes cell dies)

Question 10

Myocardial cells

Answer 10

contractile cells
produce contractions propel blood out of the chamber

Question 11

Conducting cells

Answer 11

specialized cells
autrothythmic cells
trigger heart contaction