Unit 3 Lesson 3: Processes of the Body: Function

Question 1

What is the main goal of understain physiology

Answer 1

Physiology seeks to understand how the parts of the body work together to form a healthy, living, whole organism.

Question 2

What processes play a role in physiology

Answer 2

Physiology can look at any of the processes, from cellular reproduction to how the heart coordinates with other systems to pump blood around the body.

Question 3

What is homeostasis

Answer 3

Homeostasis is the tendency towards a reasonably stable inner environment in a living organism.

Question 4

What are process in the body the contribute to homeostatis

Answer 4

Many processes in the body contribute to keeping the body at about the same temperature, the same balance of water to other substances, and so on. The body processes are all geared towards keeping the body at a healthy equilibrium.

Question 5

Where does homeostatis happen

Answer 5

Homeostasis happens at every level of a living organism.

Question 6

What helps a cell keep its balance

Answer 6

A cell needs to keep the right balance of molecules to function well; one very helpful way is by the cell membrane selectively letting in or blocking substances from entering the cell.

Question 7

What do bodies need to keep in balance?

Answer 7

• Nutrients: chemicals for energy and cell-building
• Oxygen
• Water
• Appropriate body temperature
• Atmospheric pressure: this is always pressing on your body, keeping the gases and liquids in your body at appropriate levels; that’s why in space, with no pressure, the human body can’t survive without protective suits.

Question 8

What are feedback loops what role does this play in equilibrim

Answer 8

feedback loops—pathways that communicate the status and send signals to change the status if it is out of balance.

Question 9

What is a snesor what role does this play in keeping equilbriium

Answer 9

First of all, there is a sensor, or receptor, that monitors a particular process to detect change.

Question 10

What are some examples of a sensor

Answer 10

A sensor can be nerve cells on the skin that feel temperature or a chemical receptor that detects the amount of blood sugar in your blood.

Question 11

The sensors detect change, then send a signal to the

Answer 11

control center

Question 12

What is the control center

Answer 12

the control center, where this information will be compared to the normal range.

Question 13

If the control center finds that the values are too far from the normal range what happens

Answer 13

it will trigger an effector to cause a change and return that value to the normal range.

Question 14

What is Thermoregulation

Answer 14

When you add thermo—meaning heat—to the beginning of the word “regulation,” you have just made the scientific word for how the body keeps checks on temperature. Thermoregulation is done primarily through the skin, with sweating to release heat, widening or narrowing the blood vessels near the surface, or by insulating with the fat under the skin.

Question 15

What does the osmo is Osmoregulation refer to

Answer 15

Osmo refers to the process of osmosis, which is the movement of water through a membrane to make the concentration of water and minerals equal on both sides of the membrane.

Question 16

What does osmoregulation invovle

Answer 16

Osmoregulation in the body involves expelling water, salts, and other minerals from the body to keep the concentrations in the body at the right measurements. The kidneys and bladder do most of this work.

Question 17

What is chemical regulaitin

Answer 17

Many chemical components need to stay in balance in the body. An important one is to keep your blood sugar in balance, which is accomplished primarily through hormones that are released from the pancreas. Another example is the increase in your breathing rate when there is too much carbon dioxide in your blood; increasing your breathing rate increases the amount of carbon dioxide that is released out of your lungs.