Table of Contents
What are the deep muscles of the thorax that promote the inspiratory phase of breathing?
Anterior Trunk
| Question | Answer |
|---|---|
| the deepest muscle of the abdominal wall | Transversus Abdominus |
| deep muscles of the thorax that promote the inspiratory phase of breathing | External Intercostals |
| an unpaired muscle that acts in concert with the External Obliques to accomplish inspiration | Diaphragm |
What muscles are used for deep inspiratory breathing?
Primary Muscles The primary inspiratory muscles are the diaphragm and external intercostals.
What muscles are used in thoracic breathing?
Various muscles of respiration aid in both inspiration and expiration, which require changes in the pressure within the thoracic cavity (Figure 27-6). The primary muscles of inspiration are the diaphragm, the upper and more lateral external intercostals, and the parasternal portion of the internal intercostal muscles.
What muscles are contracted during the inspiration phase of breathing?
During inspiration, the diaphragm and external intercostal muscles contract, causing the rib cage to expand and move outward, and expanding the thoracic cavity and lung volume. This creates a lower pressure within the lung than that of the atmosphere, causing air to be drawn into the lungs.
What muscle allows you to shrug your shoulders or extend your head?
28 Cards in this Set
| agonist | prime mover |
|---|---|
| muscle that allows you to shrug your shoulders or extend your head.. | trapezius |
| muscle that adducts the shoulder and causes extension of the shoulder joint | latissimus dorsi |
| shoulder muscle that is the antagonist of the muscle just described (trapezius) | deltoid |
What muscle turns the head toward the opposite shoulder?
The sternocleidomastoid muscle is one of the largest and most superficial cervical muscles. The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck.
How can you tell if someone is using accessory muscles to breathe?
Use of accessory muscles Stand behind patient and place your hands behind the sternomastoid and feel the scalene muscles during quiet respiration. If the muscle contraction is palpable during quiet tidal breathing, the accessory muscles are in use. These muscles contract normally during an attempt at deep inspiration.
What happens to the muscle that causes expansion of the thoracic cavity?
When the diaphragm contracts, it moves inferiorly toward the abdominal cavity, creating a larger thoracic cavity and more space for the lungs. Contraction of the external intercostal muscles moves the ribs upward and outward, causing the rib cage to expand, which increases the volume of the thoracic cavity.
Which muscles would be involved in the action of shrugging your shoulders?
The main muscles that shoulder shrugs target are the trapezius muscles. These muscles are located on either side of your neck. They control the movement of your shoulder blades as well as your upper back and neck.
Which muscle is the largest and strongest in the body?
The gluteus maximus is the largest muscle in the human body. It is large and powerful because it has the job of keeping the trunk of the body in an erect posture. It is the chief antigravity muscle that aids in walking up stairs.