Podcast
Questions and Answers
Which of the following structures contributes to the osteology of the anterolateral abdominal wall?
Which of the following structures contributes to the osteology of the anterolateral abdominal wall?
- Scapula
- Pelvis (correct)
- Thoracic vertebrae
- Clavicle
Which of the following is NOT considered an important component of the thoracic cage for supporting the abdominal wall?
Which of the following is NOT considered an important component of the thoracic cage for supporting the abdominal wall?
- Lower ribs
- Scapula (correct)
- Xiphoid process
- 4-7th ribs
When describing the general appearance of the abdominal wall, which statement is most accurate?
When describing the general appearance of the abdominal wall, which statement is most accurate?
- Well-developed abdominal muscles facilitate palpation of abdominal viscera.
- The abdominal wall remains rigid, irrespective of respiratory excursion.
- The contour of the abdomen is independent of muscle tone and subcutaneous tissue amount.
- The abdomen appears soft and pliable and undergoes upward and downward excursion with respiration. (correct)
The os coxae of the hip bone is NOT composed of which of the following?
The os coxae of the hip bone is NOT composed of which of the following?
Which of the following is NOT a characteristic of the lumbar vertebrae?
Which of the following is NOT a characteristic of the lumbar vertebrae?
The medial surface of the ilium is divided into two parts by which anatomical structure?
The medial surface of the ilium is divided into two parts by which anatomical structure?
What anatomical line demarcates the false pelvis from the true pelvis?
What anatomical line demarcates the false pelvis from the true pelvis?
The iliac fossa is what kind of surface?
The iliac fossa is what kind of surface?
Which of the following statements accurately describes the formation of the iliopectineal line?
Which of the following statements accurately describes the formation of the iliopectineal line?
Which of the following is NOT a layer of the abdominal wall?
Which of the following is NOT a layer of the abdominal wall?
Which statement accurately reflects a characteristic of the skin in the abdominal region?
Which statement accurately reflects a characteristic of the skin in the abdominal region?
Branches of which arterial group supply blood to the skin near the midline of the abdomen?
Branches of which arterial group supply blood to the skin near the midline of the abdomen?
Venous drainage from the upper abdominal wall primarily empties into what?
Venous drainage from the upper abdominal wall primarily empties into what?
The fatty layer of the superficial fascia in the scrotum is replaced by a thin layer of smooth muscle known as:
The fatty layer of the superficial fascia in the scrotum is replaced by a thin layer of smooth muscle known as:
How many layers are in the superficial fascia?
How many layers are in the superficial fascia?
Choose the accurate statement concerning the paired rectus abdominis muscles.
Choose the accurate statement concerning the paired rectus abdominis muscles.
The abdominal equivalent to the intercostal muscle is:
The abdominal equivalent to the intercostal muscle is:
What is the primary structure that encloses the rectus abdominis muscle?
What is the primary structure that encloses the rectus abdominis muscle?
The external oblique muscle originates from which structure?
The external oblique muscle originates from which structure?
Which muscles compress the abdominal muscles:
Which muscles compress the abdominal muscles:
Which of the muscles have an insertion on the lower three ribs:
Which of the muscles have an insertion on the lower three ribs:
Which of the muscles has an insertion on the 5th, 6th, 7th costal cartilage
Which of the muscles has an insertion on the 5th, 6th, 7th costal cartilage
Which of the muscles has an origination on the symphysis pubis and pubic crest:
Which of the muscles has an origination on the symphysis pubis and pubic crest:
Which of the muscle is supplied by the lower six throacic nerves and iliohypogastric and ilioinguinal nerves (L1).
Which of the muscle is supplied by the lower six throacic nerves and iliohypogastric and ilioinguinal nerves (L1).
What statement characterizes pyramidalis
What statement characterizes pyramidalis
What abdominal muscle is supplied by 12th thoracic nerve:
What abdominal muscle is supplied by 12th thoracic nerve:
What is true of pyramidalis:
What is true of pyramidalis:
The triangular defect of the external aponeurosis that lies immediately above and medial to the pubic tubercle is known as the:
The triangular defect of the external aponeurosis that lies immediately above and medial to the pubic tubercle is known as the:
A motorcycle driver crashed into a closed van , what is the most probably affected struture that results from force?
A motorcycle driver crashed into a closed van , what is the most probably affected struture that results from force?
Which option correctly describes the relationship of the linea terminalis and lesser pelvis
Which option correctly describes the relationship of the linea terminalis and lesser pelvis
Which vessel corresponds with the upper third of the vagina.
Which vessel corresponds with the upper third of the vagina.
The levator ani is made up of all listed muscles except:
The levator ani is made up of all listed muscles except:
Which area does NOT bound the female perinuem EXCEPT.
Which area does NOT bound the female perinuem EXCEPT.
The boundaries of the deep perineal pouch has the following EXCEPT:
The boundaries of the deep perineal pouch has the following EXCEPT:
Right and mediolateral episotomy what muscle cuts during the procedure.
Right and mediolateral episotomy what muscle cuts during the procedure.
What is not true of the bony pelvis of a female:
What is not true of the bony pelvis of a female:
Internal iliac vessels give rise to vessels except for which option:
Internal iliac vessels give rise to vessels except for which option:
In an infants development the 3 bones are divided as follows:
In an infants development the 3 bones are divided as follows:
What must occur for the pelvic bone to arise
What must occur for the pelvic bone to arise
Flashcards
Abdominal Osteology
Abdominal Osteology
Osteology of the abdomen includes lumbar vertebrae, margin of thoracic cage, and iliac & pubic bones.
Thoracic cage for abdominal wall support
Thoracic cage for abdominal wall support
Components include xiphoid process, costal margin (7-10), and lower ribs.
General appearance of the abdomen
General appearance of the abdomen
Abdomen is primarily a soft tissue region with little bone framework.
Os Coxae (hip bone)
Os Coxae (hip bone)
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Lumbar vertebrae characteristics
Lumbar vertebrae characteristics
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Iliac fossa
Iliac fossa
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What is the visceral peritoneum?
What is the visceral peritoneum?
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Describe the umbilicus
Describe the umbilicus
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Epigastric artery branches
Epigastric artery branches
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Scrotum superficial fascia
Scrotum superficial fascia
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Layers of the superficial fascia
Layers of the superficial fascia
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Anterolateral Muscle
Anterolateral Muscle
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Rectus sheath
Rectus sheath
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External oblique origins
External oblique origins
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Action of the pyramidalis
Action of the pyramidalis
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TA
TA
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What muscle has an origin?
What muscle has an origin?
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Muscles supplied external oblique.
Muscles supplied external oblique.
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Triangular external aponeurosis defect
Triangular external aponeurosis defect
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Anteroposterior compressions
Anteroposterior compressions
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Linea terminalis:
Linea terminalis:
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Correct Blood supply
Correct Blood supply
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Levator ani contents
Levator ani contents
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Female perinem is bound by.
Female perinem is bound by.
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Deep perineal space/pouch is bound.
Deep perineal space/pouch is bound.
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Study Notes
Abdominal Wall Osteology
- The abdomen's osteology includes lumbar vertebrae as well as iliac and pubic bone aspects of the pelvis
Components Supporting Abdominal Wall
- The components of the thoracic cage are vital in supporting the abdominal wall
- These components include the xiphoid process, costal margin with cartilages 7-10, and lower ribs
General Appearance of the Abdominal Wall
- It tends to be soft and pliable due to minimal bony structure
- Respiratory excursion is involved
Os Coxae Composition
- The hip bone/os coxae comprise the illium, ischium and pubis, but NOT the sacrum
- The sacrum, together with the coccyx and hip bones, form the bony pelvis
Lumbar Vertebrae Properties
- Intervertebral discs are THICKER compared to the vertebrae, unlike other vertebrae
Ilium's Medial Surface
- The arcuate line splits the ilium's medial surface into two sections
Iliopectineal Line
- The line, also termed the pelvic brim, is a bony ridge separating the lesser/true and greater/false pelvis
Iliac Fossa
- Above the arcuate line is the Concave iliac fossa
Iliopectineal Line Composition
- The arcuate line of the ilium does NOT form the anterior part of the iliopectineal line
- This line is composed of the arcuate line of the ilium creating the posterior portion, and the pectineal line of the pubis creating the anterior portion
Visceral Peritoneum
- It covers abdominal organs; visceral peritoneum is NOT part of the abdominal wall itself
Umbilicus as a Scar
- The umbilicus functions as a scar, marking the location where the fetal umbilical cord was attached
Skin Nerve Supply
- The cutaneous nerve supply to the anterolateral abdominal wall originates from the anterior rami of the lower seven thoracic nerves and the first lumbar nerve
Epigastric Arteries
- The superior and inferior epigastric arteries provide blood to the skin closest to the midline
Superficial Fascia Layers
- This fascia comprises two layers: an outer fatty layer referred to as Campers fascia and a deeper membranous layer called Scarpa's fascia
Superficial Fascia
- It continues laterally, superiorly before connecting with the superficial back and thorax fascia
Intercostal Muscle Abdominal Equivalent
- The internal oblique, external oblique and transversus abdominis muscles are the abdominal equivalent
Rectus Sheath Function
- It functions by enclosing the rectus abdominis muscle, since aponeuroses form the sheath
External Oblique Muscle Origin
- This muscle originates from the lower 8 ribs outer surface
Pyramidalis Muscle Action
- To tense the Linea Alba
Internal Oblique Insertion
- The internal oblique inserts into the lower 3 or 4 ribs, xiphoid process, linea alba, and pubic crest
Structures Originating at Symphysis Pubis
- The rectus abdominus originates at the origin site
External Oblique Muscle Supply
- Supplied by the lower 6 thoracic nerves and iliohypogastric and ilioinguinal nerves (L1)
Compressors of the Abdominal Contents
- External oblique, internal oblique, and the transversus abdominis all compress the abdominal contents
The Triangular Defect
- The External Oblique Aponeurosis is where the triangular shaped defect resides, which is also above the medial public tubercle
Damage of Symphysis Pubis
– The pubic rami structure is first affected after the motor vehicle crash
Greater and Lesser Pelvis
- The Linea Terminalis separates the pelvis into both structures while the lesser pelvis is the skeletal framework for the pelvic viscera
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