Transport in the bodyIB MYP Sciences: Flashcards
What these 14 flashcards ask
- Name the four chambers of the heart.
- What do the valves in the heart do?
- Why is the wall of the left ventricle thicker than the right?
- What is double circulation?
- Which vessel carries blood from the heart to the lungs?
- Which vessel carries blood from the left ventricle to the body?
- How are arteries adapted for their function?
- How are veins adapted for their function?
- How are capillaries adapted for their function?
- What do red blood cells do?
- What do white blood cells do?
- What do platelets do?
- What is plasma?
- How do you calculate heart rate from beats counted in 15 seconds?
Exam questions on Transport in the body
- A cardiology nurse in Dubai is explaining the structure of the human heart to a patient. The heart has four chambers and several valves, and it pumps blood both to the lungs and around the rest of the body.Explain why the wall of the left ventricle is thicker than the wall of the right ventricle.2 marks
- A fish has a heart with two chambers, and its blood passes through the heart once on each complete circuit of the body. A human has a heart with four chambers, and the blood passes through the heart twice on each complete circuit of the body: once on the way to the lungs and once on the way to the body.Describe the path taken by blood from the right ventricle of the human heart to the left atrium.2 marks
- A student in Nairobi measures her pulse at her wrist by counting the beats for 15 seconds. At rest she counts 18 beats. She then runs on the spot for three minutes and immediately counts 33 beats in 15 seconds. Her teacher explains that the pulse is the stretching of an artery wall each time the heart pumps blood into it.Calculate the student's heart rate at rest and after exercise, in beats per minute, and the increase in heart rate caused by exercise.3 marks
Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).