Search results for “transversalis”
38 results
Article
Transversalis fascia
Transversalis fascia is the lining fascia of the anterolateral abdominal wall which lies between the transversus abdominis muscle and peritoneum.
Gross anatomy
The transversalis fascia, inferior diaphragmatic fascia, pelvic fascia and iliacus fascia form a continuous lining of the abdominal an...
Article
Transversus abdominis muscle
The transversus abdominis muscle, named according to the direction of its muscle fibers, is one of the flat muscles that form the anterior abdominal wall. It is deep to the internal oblique muscle and ends in the anterior aponeurosis, which ultimately blends with the linea alba.
Summary
origi...
Article
Retroperitoneum
The retroperitoneum is the part of the abdominal cavity that lies between the posterior parietal peritoneum anteriorly and the posterior abdominal wall 4. It is C-shaped on axial cross-section with convexity projecting anteriorly in the mid-line.
Gross anatomy
The retroperitoneum is variably ...
Article
Arcuate line
The arcuate line or semicircular line of Douglas is located approximately halfway between the pubic crest and the umbilicus 1. It is the demarcation where the internal oblique and transversus abdominis aponeuroses of the rectus sheath start to pass anteriorly to the rectus abdominis muscle, leav...
Article
Fascia
Fasciae (or fascias) are connective tissues found below the skin.
Gross anatomy
A consensus terminology on the components of fascia is elusive 1. Many anatomy authors in the English language separate the fascia into superficial and deep layers.
Superficial fascia refers to the loose connectiv...
Article
Inguinal canal
The inguinal canal is a passage in the anterior abdominal wall that transmits structures from the pelvis to the perineum formed by the fetal migration of the gonad from the abdomen into the labioscrotal folds.
Gross anatomy
The inguinal canal has an oblique course, is 4 cm in length and has tw...
Article
Posterior pararenal space
The posterior pararenal space is the smallest and most clinically insignificant portion of the retroperitoneum.
Gross anatomy
It is filled with fat, blood vessels, and lymphatics, but contains no major organs.
Boundaries
posteriorly: bound by transversalis fascia
anteriorly: bound by poster...
Article
Rectus sheath
The rectus sheath encloses the rectus abdominis and pyramidalis muscles and forms an important component of the anterior abdominal wall.
Gross anatomy
The rectus sheath is composed of the aponeuroses of transversus abdominis, external oblique and internal oblique muscles, which form anterior a...
Article
Dilator naris muscle
Dilator naris muscle forms the alar component of nasalis muscle, and is one of the muscles of the nose, a subset of the facial muscles.
Summary
origin: maxilla
insertion: nasal ala
innervation: facial nerve (VII)
action: flaring of the nostril
Gross anatomy
Origin
fibers originate fr...
Article
Superior lumbar triangle
The superior lumbar triangle, also known as the triangle of Grynfeltt-Lesshaft, is one of the locations for a lumbar hernia. It is not to be confused with the adjacent inferior lumbar triangle (of Petit).
Gross anatomy
Boundaries
medially: the quadratus lumborum muscle
superiorly: twelfth r...
Article
Interfoveolar ligament
The interfoveolar ligament, formerly known as the ligament of Hesselbach, (TA: ligamentum interfoveolare) is a tendinous structure that forms from the transversus abdominis muscle 1.
Gross anatomy
A band of fibers run from the inferior and posterior aspect of transversus abdominis muscle to i...
Article
Scrotum
The scrotum (plural: scrota or scrotums) is a dual-chambered protuberance of skin and muscle that contains the testes, epididymides, and spermatic cord. It consists of two chambers separated by a septum. It is an extension of the perineum and is located between the penis and anus.
Gross anatomy...
Article
Grey Turner sign
The Grey Turner sign refers to the clinical finding of atraumatic flank ecchymosis, which is occasionally associated with retroperitoneal hemorrhage, classically due to hemorrhagic pancreatitis 2. It is thought to occur when blood extravasates from the posterior pararenal space and crosses throu...
Article
Rectus sheath hematoma
Rectus sheath hematomas, as the term implies, occur when a hematoma forms in the rectus abdominis muscle/rectus sheath. It is most common in its lower segment and is generally self-limiting.
Epidemiology
Rectus sheath hematomas are more common in women with a 3:1 F:M ratio.
Clinical presentat...
Article
Retropubic space
The retropubic space (also known as the prevesical space, cave of Retzius or cavum Retzii) is an extraperitoneal space located posterior to the pubic symphysis and anterior to the urinary bladder. It is separated from the anterior abdominal wall by the transversalis fascia and extends to the lev...
Article
Median umbilical fold
The median umbilical fold is a raised ridge of parietal peritoneum in the deep aspect of the anterior abdominal wall overlying the median umbilical ligament (urachal remnant). It is seen to lie between the transversalis fascia and peritoneum. It is one of five umbilical folds and should not be c...
Article
Umbilicus
The umbilicus is the fibrous remnant of the fetal attachment of the umbilical cord after birth.
Gross anatomy
All layers of the anterior abdominal wall fuse at the umbilical ring, a small round defect in the linea alba located just inferior to the midpoint between the xiphoid process of the st...
Article
Cremaster muscle
The cremaster muscle is the thin fascial muscle of the spermatic cord made of skeletal muscle. It is also referred to as cremaster fascia or simply the cremaster. Its action is to retract the testes, important in thermoregulation and spermatogenesis.
Gross anatomy
It is derived from the inter...
Article
Iliopsoas compartment
The iliopsoas compartment is an extra-retroperitoneal space that runs along the posterior aspect of the abdomen and pelvis and extends into the thigh.
It should be noted that the posterior abdominal wall does not have a consensus definition and that psoas muscles are sometimes included as the p...
Article
Spermatic cord
The spermatic cord (TA: funiculus spermaticus) is the tubular structure that suspends the testes and epididymis in the scrotum from the abdominal cavity.
Gross anatomy
Course
The spermatic cord arises at the deep inguinal ring, passes through the inguinal canal and exits at the superficial in...
Unable to process the form. Check for errors and try again.