1

1
External nares
2

2
Hard palate
3

3
soft palate
4

4
oropharynx
5

5
opening into nasopharynex
6

6
Laryngopharynx
7

1
Hyoid bone
8

2
Epiglottis
9

3
Thyroid cartilage
10

4
Cricoid cartilage
11

5
Thyroid gland
12

6
Anterior
13

7
Middle
14

8
Posterior
15

9
Heart
16

10
Liver
17

11
Diaphragm
18

12
Mediastinal
19

13
Posterior
20

14
Middle
21

15
Anterior
22

16
Thymus
23

17
Trachea
24

18
Larynx
25

1
Epiglottis
26

2
Thyroid cartilage (cut)
27

3
Cricoid cartilage (cut)
28

4
Trachea
29

5
Thyroid gland
30

6
True vocal cords
31

1
Anterior facial vein
32

2
Posterior facial vein
33

3
Left external jugular vein
34

4
trachea
35

5
Left common carotid artery
36

6
Left subclavian vein
37

7
superior vena cava (precava)
38

8
Thymus
39

9
Right ventricle of heart
40

10
Left ventricle of heart
41

11
Lungs
42

12
Diaphragm
43

13
Thyroid gland
44

14
Larynx