Spaces within body

Question 1

What are the boundaries of the quadrangular space?

Answer 1

Superior – inferior margin of teres minor.
Lateral – surgical neck of the humerus.
Medial – long head of triceps brachii.
Inferior – superior aspect of teres major.

Question 2

What are the contents of the quadrangular space?

Answer 2

Axillary nerve
Posterior circumflex humeral artery

Question 3

What are the boundaries of the triangular interval?

Answer 3

Superior – Inferior border of the teres major.
Lateral – Shaft of the humerus and lateral head of the triceps brachii.
Medial – Lateral border of the long head of the triceps brachii.

Question 4

What are the contents of the triangular interval?

Answer 4

Radial nerve
Profunda brachii artery

Question 5

What are the boundaries of the triangular space?

Answer 5

Lateral – medial margin of the long head of the triceps brachii.
Inferior – superior margin of the teres major.
Superior – inferior border of the teres minor (or subscapularis).

Question 6

What are the contents of the triangular space?

Answer 6

Circumflex scapular artery and vein.

Question 7

What are the boundaries of the femoral triangle?

Answer 7

Roof – fascia lata.
Floor – pectineus, iliopsoas, and adductor longus muscles.
Superior border – inguinal ligament (a ligament that runs from the anterior superior iliac spine to the pubic tubercle).
Lateral border – medial border of the sartorius muscle.
Medial border – medial border of the adductor longus muscle. The rest of this muscle forms part of the floor of the triangle.

Question 8

What are the contents of the femoral triangle?

Answer 8

Femoral nerve
Femoral artery
Femoral vein
Femoral canal

Question 9

What are the boundaries of the femoral canal?

Answer 9

Medial border – lacunar ligament.
Lateral border – femoral vein.
Anterior border – inguinal ligament.
Posterior border – pectineal ligament, superior ramus of the pubic bone, and the pectineus muscle

Question 10

What are the contents of the femoral canal?

Answer 10

Lymphatic vessels
Deep lymph node - lacunar node
Loose connective tissue

Question 11

What are the boundaries of the adductor canal?

Answer 11

Anteromedial – Sartorius.
Lateral – Vastus medialis.
Posterior – Adductor longus and adductor magnus.

Question 12

What are the contents of the adductor canal?

Answer 12

Femoral artery
Femoral vein (posterior to the artery)
Nerve to the vastus medialis and the saphenous nerve – the largest cutaneous branch of the femoral nerve.

Question 13

What are the boundaries of the popliteal fossa?

Answer 13

Superomedial – semimembranosus.
Superolateral – biceps femoris.
Inferomedial – medial head of the gastrocnemius.
Inferolateral – lateral head of the gastrocnemius and plantaris.

Question 14

What are the contents of the popliteal fossa?

Answer 14

Popliteal artery
Popliteal vein
Tibial nerve
Common peroneal nerve

Question 15

What are the boundaries of Calot’s triangle?

Answer 15

Medial – common hepatic duct.
Inferior – cystic duct.
Superior – inferior surface of the liver.

Question 16

What are the contents of the Calot’s triangle?

Answer 16

Right hepatic artery
Cystic artery
Lymph node of Lund
Lymphatics

Question 17

What are the boundaries of the inguinal canal?

Answer 17

Anterior wall – aponeurosis of the external oblique, reinforced by the internal oblique muscle laterally.
Posterior wall – transversalis fascia.
Roof – transversalis fascia, internal oblique, and transversus abdominis.
Floor – inguinal ligament

Question 18

What are the contents of the inguinal canal?

Answer 18

Spermatic cord/Round ligament
Ilioinguinal nerve (superficial ring only)
Genital branch of the genitofemoral nerve

Question 19

What are the boundaries of the inguinal (Hasselbach’s) triangle?

Answer 19

Medial – lateral border of the rectus abdominis muscle.
Lateral – inferior epigastric vessels.
Inferior – inguinal ligament

Question 20

What are the contents of the inguinal (Hasselbach’s) triangle?

Answer 20

None