Homeostasis

Question 0

What names are given to organ that secrete hormones?

Answer 0

Glands

Question 1

How do hormones travel around the body?

Answer 1

Blood stream

Question 2

How is diabetes caused?

Answer 2

Not enough insulin is produced by the pancreas

Question 3

Why is more sweat produced when it is hot?

Answer 3

To cool you down

Question 4

What happens in cold climates to blood flow in extremeties?

Answer 4

• blood is restricted by the vessel supplying capillaries
• less heat is lost
• less blood to the surface capillaries
• stops blood from cooling

Question 5

What happens in warm conditions to animals

Answer 5

• The vessels to the capillaries expand

- the capillaries become narrower so the blood does not bypass the foot

Question 6

Widening of blood vessels

Answer 6

Vasodilation

Question 7

Abnormally low blood sugar

Answer 7

Hypoglycemia

Question 8

Narrowing of blood vessels

Answer 8

Vasoconstriction

Question 9

Process of liquid becoming gas

Answer 9

Evaporation

Question 10

Part of the brain which controls the core body temperature

Answer 10

Thermoregulatory centre

Question 11

Disease characterised by abnormally high blood sugar

Answer 11

Diabetes

Question 12

Movement of muscles to release energy and raise the body temp

Answer 12

Shivering

Question 13

Storage carbohydrate in animals

Answer 13

Glycogen

Question 14

Simple sugar main substrate for respiration

Answer 14

Glucose

Question 15

Normal value of a variable

Answer 15

Set point

Question 16

Corrective change that brings the variable back to normal

Answer 16

Response

Question 17

A change in the variable

Answer 17

Stimulus

Question 18

Scientists that isolated insulin

Answer 18

Banting and best

Question 19

Abnormally high body temperature

Answer 19

Hyperthermia

Question 20

Organ which senses the body surfaces temperature

Answer 20

Skin

Question 21

Mechanism which counteracts a process

Answer 21

Negative feedback

Question 22

Part of the brain where the thermoregulatory centre is found

Answer 22

Hypothalamus

Question 23

Organ in the skin that secretes sweat

Answer 23

Sweat glands

Question 24

Abnormally low body temperature

Answer 24

Hypothermia

Question 25

Brings about the response

Answer 25

Effector

Question 26

Control centre of homeostatic mechanism

Answer 26

Integrator

Question 27

Chemical messenger that travels in the bloodstream

Answer 27

Hormone

Question 28

Hormones which acts to increase blood glucose levels

Answer 28

Glucagon

Question 29

Hormone which acts to lower blood glucose levels

Answer 29

Insulin

Question 30

Organ which stores glucose as glycogen

Answer 30

Liver

Question 31

Organ which produces insulin and glucagon

Answer 31

Pancreas

Question 32

Symptoms of diabetes

Answer 32

``` Loss of weight Intense thirst Large urine output Hunger Extreme tiredness ```

Question 33

What is type 1 diabetes

Answer 33

Develops when the pancreatic beta cells have been destroyed Due to an autoimmune disorder Hereditary

Question 34

What is type 2 diabetes

Answer 34

When too little insulin is produces due to the malfunction if the beta cells

Question 35

How can type 1 diabetes treated

Answer 35

Diet plan Exercise Glucose monitoring Insulin injection

Question 36

How is type 2 diabetes treated

Answer 36

Diet alone | Occasionally tablets that improve insulin production

Question 37

What does insulin do in the body

Answer 37

Regulates sugar Reduces glucose Converts to glycogen In liver

Question 38

What is thermoregulation

Answer 38

The ability of the body to keep its temperature close to 37c

Question 39

What happens to hair when it hot

Answer 39

Hairs lie flat so more heat is lost by radiation

Question 40

Egestion

Answer 40

Removal of waste material that has not been inside cells | Fibre, feces

Question 41

Excretion

Answer 41

Removal of aware products of cell reactions from the body | Water, minerals, urea

Question 42

Where does carbon dioxide come from

Answer 42

Respiration products

Question 43

Where does urea come from

Answer 43

Made during the breakdown of protein and amino acids in the liver

Question 44

Where does salt come from

Answer 44

Food + drink all metabolism

Question 45

Where does water come from

Answer 45

Food + drink cell metabolism

Question 46

What happens to sweat glands in heat

Answer 46

Sweat glands open | The sweat evaporates as a cooling mechanism

Question 47

What behavioural changes occur when it's hot

Answer 47

Removing clothing | Move to shade

Question 48

What happens to hair when it is cold

Answer 48

Hair erector muscles contract | Thus traps the air which is a good insulator so less heat is lost

Question 49

What happens to the arterioles when it is cold

Answer 49

Arterioles in the surface vasoconstrict Less blood flows into the capillaries on the skin surface Heat is lost by radiation

Question 50

What happens to sweat gland when it is cold

Answer 50

Sweat glands close | Less sweat is produced

Question 51

What fe the behavioural changes when it is cold

Answer 51

Put in more layers Move into sun Increase level of activity

Question 52

What is the dermis

Answer 52

Contains all nerves, blood vessels, sebaceous glands, sweat glands and hair roots

Question 53

What is the epidermis

Answer 53

The outside layer of skin and provides protection from dirt, germs and strong sunlight

Question 54

What is hair made from

Answer 54

Keratin

Question 55

What is a hair erector muscle

Answer 55

Pulls hair upright when muscle contracts

Question 56

What is the sebaceous layer

Answer 56

Produces oily substance called sebum which makes skin waterproof

Question 57

What is the sensory nerve

Answer 57

Helps you feel pain pressure or temperature

Question 58

What is the skin arterioles

Answer 58

Supply skin capillaries with oxygenated blood

Question 59

What is the subcutaneous layer

Answer 59

Fatty tissue | Helps keep you warm and protects your organ and bones from injury

Question 60

What is a sweat gland

Answer 60

Produces sweat that contains 99.5% water 0. 25% urea 0. 25% sodium chloride

Question 61

What is a sweat duct

Answer 61

Transports sweat from sweat gland to the sweat pore

Question 62

What is a sweat pore

Answer 62

Fore sweat to come out | These cover nearly all of the skin