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Ethmoidal Cells Anatomy

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Questions and Answers

What muscles also function as accessory muscles of respiration, helping elevate the ribs to expand the thoracic cavity during deep and forceful inspiration?

Serratus posterior muscles

Scalene muscles of the neck and pectoralis major and minor (correct)

Inferior part of the serratus anterior muscle only

Levatores costarum muscles

What is the primary function of the scalene muscles of the neck?

Fixing the lower ribs during normal breathing

Depressing the superior ribs during normal breathing

Elevating the ribs during forceful inspiration

Acting on the vertebral column (correct)

What is the traditional description of the function of the serratus posterior muscles?

They are inspiratory muscles (correct)

They are motor muscles

They are expiratory muscles

They are proprioceptive muscles

What is the suggested function of the serratus posterior muscles based on recent studies?

Having a proprioceptive function Signup and view all the answers

What is the role of the levatores costarum muscles in the body?

They elevate the ribs, but their role in normal inspiration is uncertain Signup and view all the answers

What is a common condition associated with the serratus posterior muscles, particularly the serratus posterior superior?

Chronic pain in myofascial pain syndromes Signup and view all the answers

How many fan-shaped muscles make up the levatores costarum muscles?

12 Signup and view all the answers

What is the primary difference between the thoracic vertebral column and the cervical and lumbar segments of the column?

Flexibility Signup and view all the answers

What is the function of the pectoralis major and minor muscles during deep and forceful inspiration?

They act as accessory muscles of respiration Signup and view all the answers

What is the function of the serratus anterior muscle during deep and forceful inspiration?

It helps elevate the ribs to expand the thoracic cavity Signup and view all the answers