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The accessory muscles of respiration are the sternocleidomastoid, scalenes, serratus anterior, pectoralis major and minor, upper trapezius, latissimus dorsi, erector spinae (thoracic), iliocostalis lumborum, quadratus lumborum, serratus posterior superior and inferior, levatores costarum, transversus thoracis, and subclavius.
The diaphragm is the main muscle of respiration (normal/relaxed breathing), assisted by the intercostals. No accessory muscles should be recruited during normal respiration unless there is a respiratory disorder. During quiet inspiration, the diaphragm and intercostals are activated. During quiet expiration, the inspiratory muscles relax and the elastic recoil of the lung tissue combined with intrathoracic pressure causes air to be pushed out of the lungs. There is little or no respiratory activity of the abdominals.
When increased oxygen is required during physical activity e.g. when running, accessory muscles will activate to assist forced respiration.
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How do you use accessory in a sentence?
accessory
Which muscles are affected by the right accessory nerve?
The sternocleidomastoid muscle (SCM) and the trapezius muscle are innervated by the accessory nerve (CN XI)
What cranial nerve is used when rotating the head?
The spinal accessory nerve, or cranial nerve XI (eleven), is a purely motor nerve which innervates the trapezius and sternocleidomastoid muscles. The sternocleidomastoid muscles are used to turn the head. The Accessory nerve also provides somatic motor fibers to muscles of the soft palate, pharynx, and larynx (spinal and medullary fibers respectively.)
What does the respiratory excursion test indicate?
Use of accessory muscles on inspiration (e.g., in patients with COPD, asthma, thoracic scoliosis, and ankylosing spondylitis).
Can you get emphysema fro tobacco use?
YES
What is an accessory organ of digestion consisting of skeletal muscles that lie in many different planes?
the tongue
Where is the obliques?
Around your rib cage. They are accessory muscles of inspiration and join ribs together diagonally
How does emphysema affect the other systems in the body?
Emphysema (or Chronic Obstructive Pulmonary Disease (COPD) affects the lungs. The lung tissue loses its elasticity so that when the person exhales or breathes out, only a little bit of air is expelled. This means that there is less space for the oxygen rich air they breathe in, so someone with emphysema never has enough oxygen. They tend to be pale with blue lips and fingernails, and they use extra muscles to help them breathe, such as the muscles in the neck. People with emphysema never have enough oxygen and as all the body systems need oxygen to function properly, the whole body is affected. Emphysema is most often caused by tobacco smoking, but it can be caused through long term exposure to industrial chemicals and toxic dusts.
Where is the obliques located?
Around your rib cage. They are accessory muscles of inspiration and join ribs together diagonally
What cranial nerve motor fibers to sternocleidomastoid and trapezius?
The sternocleidomastoid and trapezius muscles are controlled by the accessory cranial nerve. Some call it cranial nerve XI.
Which of the muscles listed does not aid ventilation 1 abdominal 2 pleural 3 accessory 4 respiratory?
ABDOMINAL
Where is the external oblique located?
Around your rib cage. They are accessory muscles of inspiration and join ribs together diagonally
