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31

Divisions of the respiratory system:

The pharynx (not part of the respiratory system proper), the larynx, the trachea, the bronchi and the lungs.

32

The diaphragm is:

the muscular partition separating thoracic cavity from abdominal cavity.

33

Each half of the diaphragm is called:

hemidiaphragm.

34

Respiratory movement of the diaphragm is about ---- between inspiration and expiration.

1 and a half inches.

35

The effect of deep inspiration on the diaphragm is:

the diaphragm lowers to its lowest level.

36

Basic properties of the pharynx:

It is the "throat." It is about 5 inches long. Posterior to the nasal and oral cavities. Superior to larynx. Anterior to cervical vertebrae.

37

Three divisions of the pharynx:

Nasopharynx, oropharynx, laryngopharynx.

38

The Nasopharynx:

Superior portion of the pharynx, lies posterior to nasal cavity and extends to plane of soft palate.

39

The Oropharynx:

Intermediate portion on the pharynx, likes posterior to oral cavity and extends from uvula to hyoid. Has both respiratory and digestive functions.

40

The Laryngopharynx:

Inferior portion of pharynx, begins at level of hyoid bone, connects esophagus with larynx, both a respiratory and digestive pathway.

41

Esophagus:

Part of digestive system, connects pharynx to stomach, posterior to larynx and trachea.

42

Respiratory system proper comprised of:

Larynx, Trachea, right and left bronchi, and the lungs. Pharynx serves as a passage for air and food, and therefore not part of the respiratory system proper.

43

First division of the respiratory system proper is:

the larynx.

44

The larynx's location is:

Midline of neck, anterior to C3-C6 and suspended from the hyoid bone.

45

Thyroid cartilage:

2 fused plates of cartilage that forms anterior wall of larynx.

46

Prominent anterior projection of thyroid cartilage is:

Laryngeal prominence. A.k.a.: the adam's apple. Located at C5.

47

Epiglottis:

Large leaf-shaped piece of cartilage in the larynx. "Stem" is attached to anterior rim of thyroid cartilage. "Leaf" portion is unattached and flips down to cover trachea during act of swallowing.

48

Cricoid cartilage:

Ring of cartilage that forms the inferior and posterior wall of larynx. Attaches to first ring of cartilage of trachea.

49

Basic info of the trachea

A.k.a. the "windpipe." Tubular passageway for air. 5 inches long, anterior to esophagus, shifted slightly to R of midline due to arch of aorta.

50

Location of trachea:

Extends from larynx, C6 to T4-T5 where it divides into the R&L primary bronchi.

51

What is the trachea made up of?

20 C-shaped rings of cartilage that are embedded into it's walls, which prevent the trachea from collapsing during inspiration.

52

Thyroid gland location:

Just inferior to larynx. R&L lobes of thyroid gland lie on either side of trachea.

53

Why is it important for radiographers to know the location of the thyroid gland?

Because it is very radiosensitive.

54

Describe the parathyroid glands:

4 raisin-sized glands embedded in the posterior surface of the thyroid gland-- 2 in each lobe of they thyroid. They are endocrine glands that secrete hormones that aid in specific blood functions.

55

Location of the Thymus gland:

just distal to the thyroid gland.

56

AP projection of the upper airway demonstrates:

the air filled trachea and larynx, possible enlargement or abnormalities of thyroid, and possible Airway system pathology.

57

Lateral projection of the upper airway demonstrates:

Air filled trachea and larynx, region of the esophagus, general location of both thyroid gland and thymus gland.

58

Where does the trachea divide into the left and right main bronchi?

T4-T5.

59

Describe the differences between the right and left bronchi:

The right is wider and shorter and more vertical.

60

Describe the carina:

Specific prominence or ridge of the last tracheal cartilage. Site of where the trachea divides into the R&L bronchi.