Area 6-Muscles of the anterior and lateral abdomen The muscles... Serratus anter

Question

Area 6-Muscles of the anterior and lateral abdomen The muscles... Serratus anterior External oblique Internal oblique (usually called the serratus ventralis in the cat) . Transverse abdominis Rectus abdominis . Cremaster Linea alba (not a muscle, but a structure.) Related questions. omin is" and "-oblique" muscles, which direction do the fibers of each of these 4 muscles travel? Which muscle is popularly called a "six pack?" Why is the linea alba a good location for a midline abdominal incision? The cremaster develops as an extension of which abdominal muscle? Does a female have cremaster muscle? .

Explanation / Answer

Question: Regarding "-abdominis" and "-oblique" muscles, which direction do the fibers of each of these 4 muscles travel?

Answer:

The external abdominal oblique muscle: The external abdominal oblique muscle originate from the lateral surface of the ribs and lumbar fascia and insert into the linea alba of the abdomen, the pubis, and the iliac crest of the hip bones. Muscle fibers in the external obliques run in a inferomedial direction, run obliquely (diagonally) across the lateral sides of the abdomen and end just lateral to the rectus abdominis muscles.

The internal abdominal oblique muscle: The internal abdominal oblique muscle is the intermediate of the three flat muscles in the lateral abdominal wall, below the external oblique and above the transverse abdominal muscle. These muscles terminate in to the linea alba of the abdomen.

The transverse abdominis muscle: The transverse abdominis muscle is the deepest of the lateral abdominal muscles, terminates in to the linea alba of the abdomen.

The rectus abdominis muscle: The rectus abdominis muscle is a pair of long, flat muscles on each side of the  linea alba of the abdomen which orginates on the first rib and sternum and insert on the pubis.

Question: Which muscle is popularly called a "six pack?"

Answer: The rectus abdominis muscles are commonly referred to as the the “six-pack.”

Question: Why is the linea alba a good location for a midline abdominal incision?

Answer: The linea alba is ta good location for the midline abdominal incision because it is tough, it provides a good tissue in which to place sutureswithout the risk of them pulling out.

Question: The cremaster develops as an extension of which abdominal muscle?

Answer: The cremaster muscle forms an extension of the internal oblique muscle.

Question: Does a female have cremaster muscle? .

Answer: In human females, the cremaster muscle loops are very much smaller than in the male. It is much smaller as it does not develop to the extent that it does in males and is found around the round ligament. In human males, the cremaster muscle develops to its fullest extent from the inguinal canal to the testes and scrotum.

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