MYOLOGY: Axial Muscles: Intrinsic Muscles of the Thorax

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created 3 years ago by sjk
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1
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Identify and state the action of (A)?

(A): Internal Intercostal Muscles

(B): Depression of superior ribs during exhalation

2
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Identify and state the action of (A)?

(A): External Intercostal Muscles

(B): Elevation of inferior ribs during inhalation

3
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Identify (C) and state its shape when CONTRACTED

State the innervation?

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(A) Diaphragm – muscle

(B) It flattens

(C) Phrenic Nerve

4
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Identify (A) and state the innervation?

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(A) Innermost Intercostal Muscles

(B) Intercostal Nerves arise from Ventral/Anterior Rami Thoracic Nerve

5
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Identify (B) AND (C)?

Stae the innervation?

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(B) Serratus Posterior Superior

(C) Serratus Posterior Inferior

Intercostal Nerves arise from Ventral/Anterior Rami Thoracic Nerve

6
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Identify (A) and state the action and innervation?

(A): Levator Costarum

(B): Elevate ribs during inspiration

(C): Dorsal/Posterior Rami Spinal Nerve

7
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Identify (A) and state the origin & insertion?

(A): Levator Costarum

Origin: Transverse processes of C7 & thoracic lumbar

Insertion: Rib below