Anatomy Flashcards by AMAN SUBAIDA

Nerve most likely to get damaged in CS

Lateral femoral cutaneous nerve

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Damage to which nerve causes hiccups

Phrenic nerve ( eg. In aortic dissection )

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What is the underlying cause of Sirenomelia (Single limb)

Caudal Dysgenesis

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Lesion in the paracentral lobule causes weakness in the following region

perineum and limbs, contralateral lower limbs, Urinary incontinence and fecal incontinence

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Trendelenberg sign

Stability of the pelvis and hip abductor muscles such as Gluteus medius and Maximus

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The maxillary artery is formed from which arch

Mandibular arch (first)

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internal and common carotid artery id formed from which arch

Third arch (hyoid)

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The fourth arch develops into

aortic arch

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Ductus arteriosus develops from which pharyngeal arch

6th

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Structure developing in dorsal mesogastrium:

Spleen at 6th week of intrauterine life

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Skin receptor responsible for detecting rapid vibration

Paccinian corpuscle

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Skin receptor responsible for detecting edges and corners

Merkel cell

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Skin receptor responsible for pressure

Ruffini’s corpuscles

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Failure of closure of rostral neuropore at 25th day leads to

Anencephaly

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Failure of closure of Caudal neuropore at 28th day leads to

Spina Bifida

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Neural crest cell mi ation is due to:

Hyaluronic acid

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First pouch

Middle ear cavity and eustasian tube

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2nd pouch forms

palatine tonsils

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3rd pouchforms

parathyroid and thymus

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4th pouch forms

Superior parathyroid and c-cells responsible for calcitonin production

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Tumor derived from Rathke’s pouch

Craniopharyngioma

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hardest bone in the body

Osseus Labrynth: part of temporal bone , also called rock bone

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Homologus male parts of Labia majora and minora

Scrotum and Penile shaft

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how many blood vessels in umbilicus

2 arteries and 1vein supplying to fetus

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Superoir vena cava is derived from

Cardinal vein

StyIohyoid ligament is derived from

2nd brachial arch

Sphenomandibular ligament is derived from which branchial arch?

1st

Tonsil is derived from:

2nd pouch

External auditory canal is formed from:

Dorsal part of 1st cleft

Lower 1/3 of vagina is formed by:

sinovaginal bulb or urogenital sinus

Upper 2/3 of vagina is formed from

Mullerian duct or parameso nephric duck

Hypoblast and epiblast forms:

Prechordal plate and notochord

gastrulation occurs at

Week 3

First germ layer to be formed is:

endoderm

Pons is derived from

Metencephalon

Metanephros gives rise to what structure

Definitive adult kidney

collecting duct is dervied from

ureteric bud

Prostate is derived from

Urongenital Sinus

Synovial fluid is produced by which cells

Type B synoviocytes

what is respberry tumor

umbilical adenoma

fecal fistula at umbilicus is due to

Persistent vitellointestinal duct

At what stage of embryonic development does an embryonormally begin to implant in the endometrium?

Blastocyst at the 6th day

Fetal stage is termed at

10th week of gestation or 8th week of fertilization

where is adrenal medulla dervied from

neural crest cells

Where is adrenal cortex dervied from

Mesoterm

Germ cells develops from

Yolk sac

testosterone is secreted by

Leydig cell

Gallbladder is lined by

Brush bordered columnar epithelium

Hassall's corpuscles are found in:

Thymus

Cord of billroth is seen in:

Spleen

Longest extra ocular muscle

Superior oblique

Length of fallopian tube

12 CM

Length of fallopian tube

12 CM

Arch of aorta begins and terminates at

T4 level

Arch of aorta begins and terminates at

T4 level

Most commonly paralyzed nerve

Facial nerve because of it's intraocious route

Site of tracheostomy

Tracheal ring 2-3

Nerve supply of gluteus maximus

SUPERIOR gluteal N. (L5 s1, s2)

Nerve supply of gluteus medius and minimus

SUPERIOR gluteal N. (l4, l5, Sl)

Muscle which opens Eusta-chian tube while yawning

Tensor veti palatini and levator veli palatini

Most common fracture of humerus

Supracondylar fracture

Infection of CNS spreads in inner ear through

Cochlear Aqueduct

2/3rds of the tongue develops from

floor of the first arch

posterior 1/3rd of the tongue is from

floor of 3rd arch

epiglottis develops from

floor of the 4th arch

kidneys develop from

intermediate mesoderm

Structure overlying left kidney

Body of pancreas

bladder and urethra is formed from

endoderm

The definitive kidney, known as the metanephros, begins to develop in

5th week

when is the functional kidney formed

12th week

during what week of the gestation does gonadal differentiation happens

5th week

sex determination occurs around

7-8 weeks

Proliferation of nerve cells happens at

12-14 weeks

metencephalon forms the

pons and cerebellum

Medulla is formed from which vesicle

Myelencephalon

where does the abdominal aorta bifurcates

L4, into left and right common iliac arteries

lesser curvature of the stomach is supplied by

Left gastric artery

blood supply of the gall bladder

cystic artery, a branch of right hepatic artery

blood supply of transverse colon

middle colic artery , a branch of SMA

blood supply of ascending colon

right colic artery

temporomadibular joint is of what type

Synovial

where is elastic cartilage found

Elastic cartilage is located in the pinna of the ear, external and internal auditory tubes, epiglottis, and larynx (cuneiform cartilage).

Hyaline cartilage of respiratory tree extends up to:

Bronchi

Secondary ossification centre appears before birth at

lower end of femur

The core of the branchial arch is derived from:

Mesoderm and Neural crest cells

rostral neuropore closes on

day 25

Ovaries develop from

genital ridge

The most common type of tracheoesophageal fistula (TEF) is

Type a or Esophageal atresia with distal TEF

A palpable fluid-filled mass that is connected to the umbilicus superiorly and urinary bladder interiorly is diagnostic of the

urachal cyst

a Mullerian anomaly caused due to the defect in the formation or fusion of paired Mullerian ducts

Unicornuate uterus

Clitoris develops from

Genital tubercle

motility and maturity of sperms in done in

epididymis

Spermatogonium to spermatozoa transformation takes place in how many days

Primitive Streak Appear On Which Day During Embryonic Period ?

Cells which surround the oocyte in Graafian follicle are called:

cummulus oopherus

Pneumotaxic center is located in

upper pons