Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

blood

Circulatory system

TermDefinition
3 functions of blood 1. Transport substances e.g oxygen and glucose 2. Defence role 3. Helps maintain a constant body temperature I.e homeostasis
4 substances transported by blood 1. digested food Glucose and amino acids. Enter at the ileum, leave at the tissue/cells.
4 substances transported by blood, examples and process 2. Dissolved gases Carbon dioxide, oxygen. Oxygen enters at the air sacs, leaves at cells. Carbon dioxide enters at cells, leaves at alveoli.
How hormones are transported by blood Enter at the endocrine gland, leave at a specific target organ.
How nitrogenous waste (urea) is disposed Enter blood at the liver and leaves at the kidneys. (Excreted in urine)
Blood composition Plasma Red blood cells (RBCs) Haemoglobin White blood cells (WBCs) Platelets
Plasma composition Liquid part of the blood Contains 90% water and has blood cells. Pale yellow colour
Plasma function Transports materials and control body temp
Red blood cells (RBC) Where they’re made Composition RBCs are made in the bone marrow. Contains haemoglobin. bioconcave shape No nucleus
Red blood cells function Transports oxygen
Red blood cells - haemoglobin and oxygen RBCs contain a pigment called haemoglobin. Oxygen sticks to haemoglobin Blood has a red colour when oxygen is stuck to RBCs by haemoglobin.
Anaemia Symptoms Cause Iron is used to make haemoglobin in the body. A deficiency in iron causes anaemia. Symptoms of anaemia: pale skin & tiredness Cause: not enough oxygen is reaching the body cells.
What is the function oxygen transported by RBCs? Oxygen transported by RBCs is used for internal respiration, the breaking down of food to release energy.
White blood cells (WBCs) Where they’re made Function Made in bone marrow Overall function - to fight infection
Platelets Where they’re made Function Formed in the bone marrow Platelets are larger cells that are broken down into smaller ones Function - to clot the blood
3 types of blood vessels 1. Arteries 2. Veins 3. Capillaries
Arteries Size of wall Size of lumen Direction of blood flow Size of walls: thick wall Size of lumen: small lumen Direction: away from the heart
Veins Size of wall Size of lumen Direction of blood flow Size of walls: thin wall Size of lumen: small lumen Direction: towards the heart
Capillaries Function Size of wall Direction of blood flow Allow materials pass in and out of the blood (permeable) e.g oxygen Size of walls: one cell thick Direction: between arteries and veins
Arteries -> artériole -> capillaires-> venules-> veins Arteries connect to arterioles before connecting to capillaries. Veins connect to venules before connecting to capillaries. Arterioles and venules are essentially narrower versions of arteries and veins.
What is urea? formed in the liver from excess protein
How WBCs fight infection They surround, engulf and eat bacteria & viruses. Make antibodies
Created by: EObrienHart
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards