External structure of the Heart

Question 1

Why is the HEART an organ?

Answer 1

Because it consists of different tissues

• *muscle tissue AND
• *nerves (which activate contraction)

Question 2

WHERE is the heart in the human body?

Answer 2

In the breast cavity (thoracic)
    Behind the breast bone (mediastinum)
           Above the diaphragm
                  Apex showing down
                            Slightly to the left

Question 3

What is the shape of the heart?

Answer 3

Coned shape

broad base above and apex pointing down

Question 4

What is the COLOUR of the heart?

Answer 4

Dark red

Question 5

What is the size of the heart?

Answer 5

Size of a closed fist

8 - 10 cm

Question 6

What is the WHITE material on the outside of the heart?

Answer 6

FAT

Question 7

What are the blood vessels called on the OUTSIDE of the heart?

AND

What are their function?

Answer 7

Heart arteries and veins (coronary)

Function: transports blood to and from the heart muscle

Question 8

Why does the heart mostly consist of muscles?

Answer 8

It must PUMP blood to the body and lungs

Question 9

Why do the lungs feel spongy when you touch them?

Answer 9

It is sacks filled with air

Question 10

What safety measures dd you take during the examination of the heart and lungs?

Answer 10

don’t cut your hands

Question 11

How did you safely dispose (get rid) of the sheep’s heart after the dissection?

Answer 11

Boil it and throw away