If the head of the neck is fixed, then it is possible for the muscles to raise the clavicle and manubrium sterni, and hence the ribs, so that they act as accessory muscles of respiration.
The sternocleidomastoid in the human is homologous to the sternomastoid muscle of the cat.
The sternomastoid, also known as the sternocleidomastoid, is a muscle located in the neck. There are two of them in the human neck and it is one of the largest cervical muscles in the body.
Sternomastoid (cat) corresponds to the medial portion of the sternocleidomastoid (human).origin: manubrium and median raphe.insertion: lateral half of lambdoidal ridge and mastoid portion of temporal bone as far as the mastoid process.The sternomastoid muscle defines the anterior triangle of the neck. In humans it is the thick strap like muscle that turns the head to the left or right.
Humans have a sternocleidomastoid muscle, but cats do not. In a cat, the sternomastoid muscle defines the anterior triangle of the neck.
diaphragm
Yes. The main cause is sternomastoid muscle.
There are two sternomastoid muscles in the human body. The sternomastoid is also known as the sternocleidomastoid.
Sternomastoid, lying in the neck, is well superior to rectus abdominis which lies in the anterior abdominal wall.
Sternomastoid, lying in the neck, is well superior to rectus abdominis which lies in the anterior abdominal wall.
Sternomastoid, lying in the neck, is well superior to rectus abdominis which lies in the anterior abdominal wall.
The diaphragm. It is the only muscle that causes breathing.
sternomastoid