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Internal intercostal muscles
Internal intercostal muscles (red) seen from back.
Details
Origin
Rib - superior border
Insertion
Rib - inferior border
Artery
Intercostal arteries
Nerve
Intercostal nerves
Actions
Hold ribs steady
Antagonist
External intercostal muscles
Identifiers
Latin
musculi intercostales interni
TA98
A04.4.01.013
TA2
2312
FMA
74085
Anatomical terms of muscle
[edit on Wikidata]
The internal intercostal muscles (intercostales interni) are a group of skeletal muscles located between the ribs. They are eleven in number on either side. They commence anteriorly at the sternum, in the intercostal spaces between the cartilages of the true ribs, and at the anterior extremities of the cartilages of the false ribs, and extend backward as far as the angles of the ribs, hence they are continued to the vertebral column by thin aponeuroses, the posterior intercostal membranes. They pull the sternum and ribs upward and inward.
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The internalintercostalmuscles (intercostales interni) are a group of skeletal muscles located between the ribs. They are eleven in number on either...
The intercostalmuscles comprise many different groups of muscles that run between the ribs, and help form and move the chest wall. The intercostal muscles...
The external intercostalmuscles or external intercostals (intercostales externi) are eleven in number on both sides. The muscles extend from the tubercles...
The innermost intercostalmuscle is a layer of intercostalmuscles. It may also be called the intima of the internalintercostalmuscles. It is the deepest...
muscle. These muscles help to move the ribs during breathing. Neurovascular bundles are located between the internalintercostalmuscle and the innermost...
and, to a lesser extent, the intercostalmuscles drive respiration during quiet breathing. The elasticity of these muscles is crucial to the health of...
with courses of spinal nerves shown Intercostal nerve block External intercostalmusclesInternalintercostalmuscles Peripheral nervous system This article...
intimi. They supply the intercostalmuscles and, by branches which perforate the intercostales externi, the pectoral muscles and the mamma. There are...
perforating branches of the internal thoracic artery pierce through the internalintercostalmuscles of the superior six intercostal spaces. These small arteries...
when blowing out a candle, expiratory muscles including the abdominal muscles and internalintercostalmuscles generate abdominal and thoracic pressure...
males, the cremaster muscle is also attached to the internal oblique. The internal oblique is supplied by the lower intercostal nerves, as well as the...
up intercostal in Wiktionary, the free dictionary. Intercostal means "between the ribs". It can refer to: Intercostalmuscle Highest intercostal vein...
posterior intercostal membranes are aponeuroses located between the ribs and are continuations of the external and internalintercostalmuscles, respectively...
the chest. It is in the same layer as the subcostal muscles and the innermost intercostalmuscles. It arises on either side from the lower third of the...
(called forced exhalation) involves the internalintercostalmuscles used in conjunction with the abdominal muscles, which act as an antagonist paired with...
the posterior intercostal artery. After passing the sixth intercostal space, the internal thoracic artery splits into the following two terminal branches:...
involuntary and voluntary, since breath can be held through internalintercostalmuscles. All-or-none law Automatic behavior Conditioned reflex Instinct...
lower six intercostal arteries as well. The muscles are innervated by thoraco-abdominal nerves, these are continuations of the T7-T11 intercostal nerves...
skeletal muscles. Different sources group muscles differently, regarding what is defined as different parts of a single muscle or as several muscles. There...
erector spinae muscles. Deep to these muscles are the osseous portions of the 6th and 7th ribs and the internal and external intercostalmuscles. The triangle...
Muscles of thorax Pectoralis major Pectoralis minor Subclavius Serratus anterior Levatores costarum External intercostalmuscleInternalintercostal muscle...
respiratory muscles. The most important respiratory muscle is the diaphragm. Other respiratory muscles include the external and internalintercostalmuscles, the...
is the innermost of the flat muscles of the abdomen. It is positioned immediately deep to the internal oblique muscle. The transverse abdominal arises...
breathing (which involves most of the muscles of respiration, such as external and internalintercostalmuscles) during intake of one or more puffs from...
tetrapods, the rib cage intrinsically holds the muscles of respiration (diaphragm, intercostalmuscles, etc.) that are crucial for active inhalation and...
external oblique muscle (also external oblique muscle or exterior oblique) is the largest and outermost of the three flat abdominal muscles of the lateral...
chest between the ribs in the layer between the internalintercostalmuscles and external intercostalmuscles. The stimulator and sensory lead are then connected...
pelvis by the diaphragmaticus muscle (analogous of the diaphragm in mammals). During inhalation, the external intercostalmuscles expand the ribs, allowing...
chest between the ribs in the layer between the internalintercostalmuscles and external intercostalmuscles. The stimulator and sensory lead are then connected...
The intercostals are a set of muscles sandwiched among the ribs. They interconnect ribs, and are therefore the primary respiratory skeletal muscles. They...