Circulatory System

Question 1

What is the function of the circulatory system?

Answer 1

Primarily associated with the transport of
*oxygen
*nutrients
*hormones
*ions
*fluids
throughout the body
**As well as the removal of metabolic waste.

Question 2

What is cellular respiration?

Answer 2

when glucose is burned or combined with oxygen as show in the following equation:
C6H12O6 (glucose)+
6O2(oxygen) ->6CO2(carbon dioxide) +6H2O (water)

Question 3

What is oxygens function in the circulatory system?

Answer 3

*moves down its partial pressure gradient from air into the blood of the alveolar capillaries
*most of oxygen bunds to hemoglobin in red blood cells (RBC)
*small amount dissolves in blood
**without oxygen cell would be unable to transfer the energy in glucose to ATP during cellular respiration

Question 4

Carbon Dioxide function

Answer 4

*produced during cellular respiration
*transported away from tissue to diffuse out of alveolar capillaries
*can also bind to hemoglobin in RBC or dissolve in blood
*most travels in form of bicarbonate ions

Question 5

where is metabolic waste filtered?

Answer 5

The kidney

Question 6

a function of the kidney

Answer 6

help regulate the levels of fluids and ions in the blood

Question 7

what is an arteriole

Answer 7

*very small blood vessel that branches off from artery
*carries blood away from your heart to your tissues and organs
*link up capilarries

Question 8

what digested nutrients circulate to target cells to be absorbed

Answer 8

*glucose
*amino acids
*fats
*hormones

Question 9

what is the bodies average temp

Answer 9

98.6 For 37C

Question 10

why is the average body temperature 98.6

Answer 10

*optimal for metabolic precesses and defense against pathogens

Question 11

function of thermoreceptors

Answer 11

*sensory neurons
*detect changes in temperature
*send impulses to hypothalamus

Question 12

Where does hypothalamus send signals during thermoregulation

Answer 12

to the effectors

Question 13

what are effectors

Answer 13

smooth muscles that surround cutaneous arterioles

Question 14

what happens when body temperature is too warm

Answer 14

*smooth muscle relaxes
*vasodilation occurs
*^ allows for more blood to flow through capillary bed near surface if skin
*more heat is lost to its surrounding

Question 15

what happens when body temperature is too cool

Answer 15

*smooth muscle contracts
*arterioles constrict
*vasoconstriction occurs, reducing volume of blood that flows near the bodies surface
*heat is minimized to its surroundings

Question 16

what is a physical way the body can cool and warm itself

Answer 16

sweating and shivering