Save
Upgrade to remove ads
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

Human Biology 2011

Human Biology

QuestionAnswer
Describes a function of heart valves Stops Blood from flowing backwards and ensures blood flows in one direction.
Describes one structural difference between the pulmonary artery and the pulmonary vein, eg • PA has a valve; PV does not. PA valve stops back flow of blood (due to gravity), whereas blood in PV flows easily from lungs to heart
Describes the function of the coronary arteries in supplying the heart with essential materials, • Supplies nutrients / glucose to the heart / tissue / cells • Provides oxygen to the heart • Removes carbon dioxide / metabolic wastes from heart.
Identifies any TWO lifestyle factors that lead to CHD, • Stress • Excess alcohol intake • Excess fat in diet • Excess salts in diet • Overeating • Physical inactivity.
Describes what lifestyle factor does, eg ONE of • high fat increases cholesterol • high fat / salt causes hardening of arteries • excess alcohol / overeating increases blood pressure • stress in lifestyle • lack of exercise. (cholesterol) – plaque build-up on wall(s), narrowing of CA, restricts blood flow / increases blood pressure OR narrowing of CA, walls less elastic, blood pressure increased / plaque builds up on CA wall(s) OR HBP strains on heart weakens it
Answer discusses the role of TWO of the heart, plasma, red blood cells ie how and why • Heart pumping causes blood flow around body under high pressure (H), to distribute substances to all the body cells (W). • RBC carry oxygen to cells / tissues / muscles as oxyhaemoglobin (H) for respiration / energy release(W).
Answer discusses the role of TWO of the heart, plasma, red blood cells ie how and why Part 2 Plasma is liquid / watery so can transport substances in solution (H) to supply / remove substances to / from cells (W).
Describe the Diaphragm and the Intercostal Muscles Diaphragm • Contracts and moves down / flattens (not pushes). • Lowers air pressure. Intercostal muscles • Contract and move ribs / ribcage up / out.
Disadvantages of breathing through the mouth Air not filtered, warmed,moistened
Function of cartilage that surrounds the trachea and bronchi • support the trachea / bronchi / tubes • keep trachea / bronchi open.
Explains how breathing keeps the body alive, eg Breathing in / inhaling takes in air rich in oxygen for respiration AND Breathing out / exhaling expels / removes carbon dioxide / waste product OR provides oxygen and removes carbon dioxide.
What is the purpose of respiration? • uses glucose to release / produce energy • uses oxygen to release / produce energy. • to produce energy to carry out other body processes – to grow / move / reproduce. OR • to produce energy to use for metabolic processes.
Describes a function of renal artery, eg one of: • Brings blood to the kidney to be cleaned. • Carries blood high in urea / salts / water / wastes to kidney. • Carries oxygen (oxygenated blood) to kidney.
Decribe one function of the kidney • filters waste products eg urea from blood
Explains how blood is filtered / separated, eg: Blood in glomerulus / capillaries at high pressure forces / pushes / causes (smaller) substances eg glucose / urea / salts / water to move into Bowman’s capsule / nephron while other (larger) substances eg proteins / blood cells remain in blood.
Describes an effect of drinking more water on kidney, eg • kidney is washed out / rinsed with extra water
Explains how drinking extra water prevents another kidney stone eg More water intake causes more water to be filtered by the kidney. Linked to • Kidney is washed out with extra water so solids cannot stick to kidney wall again. • If solutions is less concentrated, there is less chance that a solid will form.
Possible outcome of kidney stone forming in the ureter Pain in abdomen, lower back or kidney.
Describe the difference of urea and urine. • Urea is a pure substance; urine is urea mixed with water, salts.
Created by: nicoleole1
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