Planes of Reference
Bony Thorax
Visceral Thorax & Muscles
Muscles
Physiology
100

This is a section that divides the body into left and right portions.

Sagittal

100

The number of paired ribs in most humans.

12

100
The trachea branches into _(#)___ mainstem bronchi.

2

100
The muscle between the bony part of each rib that assists with exhalation.

internal intercostal interosseus portion

100

Name the 2 forces that cause the rib cage to return to the resting position following elevation of the rib cage. 

elasticity and gravity

200

This is a section that cuts the body into upper and lower halves.

Transverse 

200

The ribs attach to the ____ vertebrae.

thoracic

200
True or false: Babies take more breaths per minute than adults. 

True

200

Speech occurs during __________. 

exhalation

200

Tidal volume + inspiratory reserve volume + expiratory reserve volume = ?? 

vital capacity

300

This is a such that divides the body into front and back halves. 

Coronal

300

The number of cervical vertebrae.

7

300

The minute air sacs of the lungs where gas exchange occurs. 

alveoli

300

True or false: During quiet breathing, expiration does not require muscle contraction but inspiration does. 

True

300

The term used for the air that cannot be expelled during expiration. 

residual volume

400

Term meaning towards the midline of the body.

Medial

400

The number of thoracic vertebrae.

12

400

Powerpoint Visceral Thorax & Muscles - Label A

internal intercostals, interchondral portion

400

Name a group of muscles that are primarily used for active expiration.

abdominal muscles

400

Two primary areas of the respiratory system that are used to produce pressures for speech. 

intraoral and subglottal

500

Term meaning "toward the top" of the body. 

superior

500

Go to powerpoint - Bony Thorax 500 Label A & D

(A) internal intercostals and (D) Osseus portion of the ribs

500

Powerpoint - Label A, B, & D

external obliques, linea alba, and rectus abdominis

500

Name 3 muscles used to expand the thoracic cavity during inhalation.

diaphragm, external intercostals, pectoral muscles, scalenes, sternocleidomastoid, transversis thoracis, posterior serratus superior

500

When the volume of the lungs increases, the pressure _________.

decreases

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