QuestionSBA
QuestionChoice
The image shows a lateral view of the thoracic wall, with a dissection of the external intercostal muscles of one of the intercostal spaces, showing the muscle layers underneath. The muscles indicated by the blue arrow are orientated obliquely, forward and upward, so they are the internal intercostal muscles, which lie directly underneath the external intercostal muscles. The internal intercostals are implicated in forced expiration and work by depressing the lower ribs and increasing the pressure in the thoracic cavity. The external intercostals work by elevating the ribs and decreasing the pressure in the thoracic cavity during inspiration.
10008808
d
Contributes to forced expiration by elevating the ribs and decreasing the pressure in the thoracic cavity
QuestionChoice
The image shows a lateral view of the thoracic wall, with a dissection of the external intercostal muscles of one of the intercostal spaces, showing the muscle layers underneath. The muscles indicated by the blue arrow are orientated obliquely, forward and upward, so they are the internal intercostal muscles, which lie directly underneath the external intercostal muscles. The internal intercostals are implicated in forced expiration and work by depressing the lower ribs and increasing the pressure in the thoracic cavity. The resting inspirator movements are performed by the diaphragm.
10008809
e
Contributes to resting inspiratory movements
QuestionChoice
The image shows a lateral view of the thoracic wall, with a dissection of the external intercostal muscles of one of the intercostal spaces, showing the muscle layers underneath. The muscles indicated by the blue arrow are orientated obliquely, forward and upward, so they are the internal intercostal muscles, which lie directly underneath the external intercostal muscles. The internal intercostal muscles are implicated in forced expiration and work by depressing the lower ribs and increasing the pressure in the thoracic cavity.
10008805
a
Contributes to forced expiration by depressing the lower ribs and increasing the pressure in the thoracic cavity
QuestionChoice
The image shows a lateral view of the thoracic wall, with a dissection of the external intercostal muscles of one of the intercostal spaces, showing the muscle layers underneath. The muscles indicated by the blue arrow are orientated obliquely, forward and upward, so they are the internal intercostal muscles, which lie directly underneath the external intercostal muscles. The internal intercostals are implicated in forced expiration, not forced inspiration and work by depressing the lower ribs and increasing the pressure in the thoracic cavity.
10008806
b
Contributes to forced inspiration by depressing the lower ribs and increasing the pressure in the thoracic cavity
QuestionChoice
The image shows a lateral view of the thoracic wall, with a dissection of the external intercostal muscles of one of the intercostal spaces, showing the muscle layers underneath. The external intercostals are implicated in forced inspiration, elevating the ribs and decreasing the pressure in the thoracic cavity. The muscles indicated by the blue arrow are orientated obliquely, forward and upward, so they are the internal intercostal muscles, which lie directly underneath the external intercostal muscles. The internal intercostals are implicated in forced expiration and work by depressing the lower ribs and increasing the pressure in the thoracic cavity.
10008807
c
Contributes to forced inspiration by elevating the ribs and decreasing the pressure in the thoracic cavity
Concept
Chapter
2693
5279
Muscles of the thoracic cage
Topic
198
Thoracic anatomy
14308
Picture
1818
63 - Muscles of the thoracic cage (internal oblique).png
images/x16d7p7j1683002765947.jpg
images/x16d7p7j1683002765947_256.jpg
images/x16d7p7j1683002765947_512.jpg
KikKFQTQrImYiGaIiYiHeAxluFBn
Topic
198
Thoracic anatomy
What is the function of the anatomical structure indicated by the blue arrow in the image below?
[lightgallery]
a