EduNinjaMammals have a closed double circulation system.
Table 1.1 shows some structures in the mammalian circulatory system.
Complete Table 1.1 to show the sequence of structures through which blood flows, starting with the pulmonary vein.
Use the numbers 2 to 5 to indicate the correct sequence.
Table 1.1
Name as precisely as you can the structure described in each of the following statements.
The blood vessel that transports deoxygenated blood from the heart.
Fig. 2.1 is a simplified diagram of the human circulatory system.
Fig. 2.1
Identify blood vessel Q and blood vessel R, shown in Fig. 2.1.
Q
R
Fig. 2.1 shows the heart and blood vessels at three stages of the cardiac cycle.
Name the blood vessels labelled F and G.
F
G
During one cardiac cycle:
- blood enters the heart from the lungs and from the rest of the body
- blood leaves the heart to be transported to the lungs and to the rest of the body.
Name the blood vessels entering the heart that bring blood from the rest of the body.
Fig. 4.1 is a simplified diagram of the circulatory system of a mammal. Some of the lymph system is also shown.
Fig. 4.1
With reference to Fig. 4.1, name:
blood vessel W
blood vessel X
valve Y
heart chamber Z
Arteries, capillaries and veins are three types of blood vessel.
The passage outlines the roles of blood vessels associated with the heart.
Complete the passage by using the most appropriate scientific terms.
The .................carries blood to the left atrium. After passing from the left atrium to the left ventricle, blood is pumped into the aorta. The aorta is one of two large arteries that carry blood away from the ventricles of the heart. Blood that leaves the heart to enter these arteries must pass through the ................ valves.
Oxygenated blood is supplied to the cardiac muscle cells through the ..........arteries.
Hummingbirds are the smallest of birds and are found in the Americas. Some species migrate hundreds of kilometres between warmer overwintering areas and summer breeding grounds. Like mammals, birds maintain a constant body temperature.
Hummingbirds have a high requirement for sugars because they have a very high metabolic rate. Fig. 3.1 shows a hummingbird feeding on nectar, one of their main food sources.
Fig. 3.1
Complete Table 3.1 to show the names and functions of the main blood vessels associated with the heart of mammals.
Table 3.1
Which row is correct for the pulmonary vein?
blood carried
muscle in walls
lumen size
deoxygenated
thick
small
deoxygenated
thin
large
oxygenated
thick
small
oxygenated
thin
large
Which blood vessels carry blood into the atria of the heart?
coronary artery and pulmonary artery
pulmonary artery and vena cava
pulmonary vein and vena cava
vena cava and coronary artery