Anatomy

Difference Between The Eustachian Tube of Infants and Adults

By / Anatomy, ENT, Notes, USMLE

The following table summarizes the differences between the eustachian tube of an infant and an adult Infant Adult Length 18 mm 36 mm Direction More or lesshorizontal (makes anangle of 10° with thehorizontal plane) Oblique, directeddownwards, forwardsand medially (makesan angle of 45° withthe horizontal plane) Angulation ofisthmus No angulation Angulation present Hope you found that …

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Branches of The Internal Carotid Artery

By / Anatomy, Notes, USMLE

The following table summarises the branches of the internal carotid artery. Part Branches Cervical part No branches Petrous part 1. Caroticotympanic branches2. Pterygoid branch Cavernous part 1. Cavernous branches2. Superior and inferior hypophyseal arteries Cerebral part 1. Ophthalmic artery2. Anterior choroidal artery3. Posterior communicating artery4. Terminal branches5. Anterior cerebral artery6. Middle cerebral artery Want to …

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Anatomical Features of Male and Female Skull

By / Anatomy, FMT, Notes, USMLE

The following table summarises the difference between Anatomical Features of Male and Female skull. Male Female Bones Thicker and heavier Thinner and lighter Cranial capacity More Less Muscular markingsand ridges Well-marked, henceseen prominently Not well-marked Superciliary arches Prominent Not prominent Mastoid process Prominent Less prominent Frontal and parietaltubers Less prominent Prominent Hope you found that …

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Origin, Insertion, Nerve supply and Actions of Muscles of Adductor Compartment of Thigh

By / Anatomy, Notes, USMLE

The following table summarizes the origin, insertion, nerve supply, and actions of muscles of the adductor compartment of the thigh. This is an important table for USMLE, PLAB, NEXT-PG. Remember this by heart. Muscle Origin Insertion Nerve supply Actions Pectineus (flat, quadrilateral muscle, composite muscle) • Pecten pubis• Upper half of the pectineal surface of …

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Metatarsal Shapes and their Articulations

By / Anatomy, Notes, Orthopaedics, USMLE

The following table summarizes the shapes of the proximal surfaces of the bases of the metatarsals and their articulations. These are sometimes asked in medical school exams and in USMLE, PLAB, NEXT-PG. Metatarsal Shape of the articularsurface Articulation 1st Kidney-shaped Medial cuneiform 2nd Triangular Intermediate cuneiform 3rd Triangular Lateral cuneiform 4th Quadrangular Cuboid 5th Triangular …

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Parts of The Male Urethra – Differences between Prostatic, Membranous and Spongy Urethra

By / Anatomy, Notes, USMLE

The following table summarizes the different parts of the Male Urethra Features Prostatic part Membranous part Spongy part Location Within prostate Within urogenital diaphragm Within penis (corpus spongiosum) Length 3 cm 1.5–2 cm 15 cm Shape in cross section Horseshoe shaped Star-shaped In the bulb—trapezoidIn the body—transverse slitAt external urethral orifice—vertical slit Diameter anddilatability Widest …

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Coverings of Direct and Indirect Inguinal Hernias

By / Anatomy, Notes, Surgery, USMLE

The following table enlists the Coverings of the Direct and Indirect inguinal hernias. Indirect inguinal hernia Direct inguinal hernia • Extraperitoneal tissue• Internal spermatic fascia• Cremasteric fascia• External spermatic fascia• Skin • Extraperitoneal tissue• Fascia transversalis• Conjoint tendon (in medial direct hernia)• Cremaster fascia (in lateral direct hernia)• External spermatic fascia• Skin Hope you found …

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Structures passing through Superficial and Deep Inguinal Rings

By / Anatomy, Notes, Surgery, USMLE

The following table summarizes the Structures passing through the Superficial and Deep Inguinal Rings. Deep inguinal ring In male In female • Ductus deferens and its artery• Testicular artery and theaccompanying veins• Obliterated remains ofprocessus vaginalis• Genital branch ofgenitofemoral nerve• Autonomic nerves andlymphatics • Round ligament of uterus• Obliterated remains ofprocessus vaginalis• Lymphatics from theuterus …

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Muscles attached to Sternum

By / Anatomy, Notes, USMLE

The following table lists the Muscles attached on the posterior and anterior surfaces of sternum. Muscle attached on theanterior surface of thesternum Muscles attached on theposterior surface of thesternum • Sternal head ofsternocleidomastoid • Sternohyoid• Sternothyroid • Pectoralis major • Sternocostalis • Rectus abdominis • Diaphragm (sternal fibres) Hope you found that article useful. We …

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Diaphragm Openings Summarized

By / Anatomy, Notes, USMLE

The following table summarizes the Location, shape, and vertebral level of three major openings of the diaphragm. Opening Location Shape Vertebrallevel Vena cavalopening In the central tendonslightly to the right ofmedian planebetween the centraland right posteriorleaflets Quadrangularor square T8 (body) Esophagealopening Slightly to the left ofmedian plane (Thefibres of right crussplit around theopening and act …

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