1411 chapter 3 Anatomy

Thoracic Cavity

Contains the following structures:

➢ Lungs and heart

➢ Organs of the respiratory, cardiovascular, and

lymphatic systems

➢ Inferior portion of the esophagus

➢ Thymus gland

• Three separate chambers

➢ Pericardial cavity

➢ Right and left pleural cavities

Pharynx

What is the musculomembranous tubular structure located in the front of the vertebrae & behind the nose, mouth, and larynx?

Larynx

Which structure is 1.5 in in length and situated below the root of the tongue and in front of the laryngeal pharynx?

Thyroid cartilage

Which structure forms the laryngeal prominence?

Mediastinum

What is the name of the area between the two pleural cavities?

Alveoli

Respiratory sacs are known as the..

Hilum

Where vessels enter lung

Mediastinum

separates pleural cavities

➢ Contains all thoracic structures, except lungs and

pleurae

Pharynx ,Trachea ,Bronchi, Two lungs

What makes up the respiratory system?

Trachea

Fibrous, muscular tube with 16 to 20 C-shaped cartilaginous rings in its walls for rigidity.

• Measurements

➢ Diameter = approximately 1.3cm (0.5 inch)

➢ Length = 11 cm (4.5 inches)

➢ Posterior aspect is flat

• Lies in midline, anterior to esophagus

Right primary

The ___ _____ bronchus is shorter, wider, and more vertical than left. Position and size make it easier for foreign bodies to enter the..

Carina

a hooklike process on the last cartilage & trachea divides or bifurcates at this area

Alveolar sacs

Alveolar ducts end in

Left

What lung has two lobes?

Thyroid, trachea, esophagus

What structures are located in the anterior neck?

Pharynx

The structure of the upper neck that serves as a passageway for both air & food is the..

Nasopharynx

Portion of the pharynx located above the soft palate is the..

Oropharynx

Portion of the pharynx located above the soft palate is the..

Larynx

Organ of the voice is

Trachea

What mediastinal structure consists of C-shaped cartilaginous rings?

Primary bronchi

Which structures branch from the distal end of the trachea?

Right

Which bronchus is shorter & wider than the other?

Because of the position of the heart & liver

Why is the right lung shorter & broader?