0
scalenes
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
How is thoracoscopy done?
The surgeon makes two or three small incisions in the chest wall, often between the ribs. By making the incisions between the ribs, the surgeon minimizes damage to muscle and nerves and the ribs themselves. A tube is inserted in the trachea.
Why the last two pairs of ribs are not attached to the breast bone?
This is very good question. First rib is almost fixed. Next six ribs are attached to sternum. 8, 9 and 10th ribs are successively attached to the above ribs. 11th and 12 th ribs are hanging. First rib is almost fixed and over it the rest of the rib cage move to expand and contract. 11 th and 12 th ribs are attached to rib cage above on one hand by muscles. Below the same ribs are attached to hip bone by quadratus lumborum muscle. So this arrangement gives rib cage mobility on one hand and stability on the other hand. Two ribs give better mobility than one could have given and three ribs are not needed.
Is rectus abdominis a muscle of inspiration?
Actually, no. The rectus abdominis is a muscle that helps with the digestion of food, helps to hold organs in one place and gives you the "6 pack" feature when doing sit ups. There are two other muscles on the ribs that help the lungs with inspiration. They are the Intercostalis muscles. One is on the ribs themselves and one is on the gaps between the ribs. They move the ribs in and out with the lungs with every inspiration and expiration. Hope this helps!
What is theection of the sternum responsible for articulating with the calvicles and the first two ribs?
manubrium
What muscle attaches onto the cartilage of the ribs five through seven?
None! You are thinking of the external intercostal muscle which attaches to the *bone* of the ribs. However, at the cartilage of the rib the muscular portion is replaced by the external intercostal *membrane.* Muscles produce force on their attachments, causing piezoelectric force which eventually forms the bony landmarks you learn in anatomy lab.
Why is a floating rib easily broken?
There are twelve pair of ribs. The first seven ribs are true ribs because they have direct attachment to the sternum. An additional three pair of ribs have indirect attachment to the sternum meaning that they attach to other structures that attach to the sternum. The last two ribs are called floating ribs because they do not attach to the sternum at all. Because the floating ribs do not attach to the sternum they are prone to injury.
What are the bottom 2 pairs of ribs called?
The lowest two pairs are known as floating ribs.
What are the two main ribs covering the heart?
how many ribs that covering the heart
The last two pairs of ribs that have no cartilaginous attachments to the sternum are sometimes called?
Floating ribs the 11th. and 12th. ribs
Which excise elevates the heart rate the most?
Running is the exercise in which the heart rate elevates the most. Also, jump training and karate are two other forms of exercise that makes the heart elevate dramatically.
What are the bottom two pairs of ribs called?
ANSWER:Yes they are. See the related link for more information on this.
Only two backbones and a thousand ribs?
two fat guys eating Pork ribs at a bar :P
