36. Responses to Hypoxia 1

Question 1

what is the sensor to detect changes in gas homeostasis?

Answer 1

chemoreceptors - to maintain homeostasis. they are chemical sensing

Question 2

what is the two main functions of respiration?

Answer 2

1. provide oxygen to working tissues - carried by the bloodstream and cobusting it to create ATp
2. gets rid of CO2

Question 3

what are the four main components of delivering oxygen to tissues and removing CO2?

Answer 3

1. ventilation - moving external air internally
2. moving gases from the alveolar, across the exchange membrane, into the blood, and pulmonay capillaries
3. diffusion from systemic capilaries into cells
4. remove CO2

Question 4

what controls the process of respiration?

Answer 4

have a sensor - chemorecptors - central and periferial

a control centre - respiratory centre

and an effector - respiratory muscles - change the rate and depth of breathing

Question 5

what three substances do chemoreceptos pick up on?

Answer 5

oxygen, CO2, pH

Question 6

what are the two types of chemreceptors, where are they found and what do they do?

Answer 6

central chemorecepotrs - in CNS - sense CO2 in blood - senses changes in pH (increase in hydrogen ions)

periferial chemoreceptors - not in CNS, interested in oxygen levels