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ICAR AIEEA Veterinary Gross Anatomy: practice questions

ICAR AIEEA (PG): Master's entrance, Veterinary Science and Animal Sciences · India · NTA for ICAR

Original practice questions written to the published syllabus · not past papers
10worked here, free
87written to this exam in this subject
13syllabus units

What this subject covers

Structure of the domestic animal body, with the ox as the type species compared across horse, sheep, goat, pig, dog, fowl and laboratory animals. Applied anatomy (injection sites, nerve blocks, surgical approaches) links it directly to the clinic.

In the exams: ICAR AICE-JRF core group 07; ICAR AIEEA-PG 13 (Anatomy); PRC 10%; Nepal NLEV 6 items (with histology); BCSE 18-20 items; China basic paper 20 (with histology and embryology); AVE Paper 1 at least 2

What ICAR AIEEA asks from it

ICAR AIEEA (PG), Code 13 Veterinary Science (Anatomy), and ICAR AICE-JRF/SRF core group 07 (Anatomy)

Comparative recall and reasoning: vertebral and dental formulae, species differences in bones (acromion, third trochanter, carpal and tarsal counts), joints and the stay apparatus, arterial branching and the rete mirabile, cranial nerve functions and the brachial and lumbosacral plexuses, stomach compartments, kidney and lung lobation, accessory sex glands, avian anatomy, and applied sites such as paravertebral, cornual and epidural blocks.

Where the 87 questions fall

How our questions for ICAR AIEEA spread across the units of Veterinary Gross Anatomy. Difficulty: 12 easy, 42 medium, 33 hard.

Comparative osteology10
Comparative splanchnology10
Neurology8
Angiology7
Avian anatomy7
Arthrology6
Myology6
Aesthesiology (sense organs) of the ox6
Boundaries of body cavities and pleural and peritoneal reflections6
Gross anatomy of laboratory animals6
Functional anatomy6
Applied and topographic anatomy: injection sites, nerve blocks and surgical approaches5
Biomechanics4

10 practice questions, worked

Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.

1 · Comparative osteology · hard

The centroquartal bone of the bovine tarsus is formed by fusion of which bones?

  1. Second and third tarsal bones
  2. Central and fourth tarsal bones
  3. Talus and calcaneus
  4. First and second tarsal bones
Answer and working

B. Central and fourth tarsal bones

Ruminants have five tarsal bones because the central and fourth tarsals fuse into the centroquartal bone, and the second and third also fuse. The fused first-and-second tarsal is the equine pattern; the talus and calcaneus remain separate in all species.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

2 · Comparative osteology · easy

Which bone forms the whole roof of the cranial cavity and the highest point of the skull in the ox?

  1. Frontal bone
  2. Parietal bone
  3. Occipital bone
  4. Interparietal bone
Answer and working

A. Frontal bone

In the ox the frontal bone extends caudally to form the intercornual protuberance, the highest point of the skull, and pushes the parietal onto the caudal surface. In most other species the parietal bones form much of the roof.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

3 · Biomechanics · hard

Which structures make up the suspensory apparatus of the equine fetlock?

  1. Superficial and deep digital flexor tendons with their proximal and distal check ligaments
  2. Common digital extensor tendon and collateral (fetlock) ligaments
  3. Interosseous (suspensory) muscle, proximal sesamoids and distal sesamoidean ligaments
  4. Navicular bone and impar ligament
Answer and working

C. Interosseous (suspensory) muscle, proximal sesamoids and distal sesamoidean ligaments

The suspensory apparatus is a continuous ligamentous support: interosseous muscle to the sesamoids, then the distal sesamoidean ligaments to the phalanges. The flexor tendons and check ligaments are separate parts of the stay apparatus, and the navicular apparatus belongs to the foot.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

4 · Angiology · hard

How does most arterial blood reach the brain of the adult ox?

  1. Through the rostral epidural rete mirabile, fed by branches of the maxillary artery
  2. Through paired internal carotid arteries running directly to the cerebral arterial circle
  3. Through the vertebral arteries alone
  4. Through the external ophthalmic artery alone
Answer and working

A. Through the rostral epidural rete mirabile, fed by branches of the maxillary artery

In adult ruminants the extracranial internal carotid artery regresses, and the rete mirabile on the floor of the cranial cavity, fed mainly by maxillary artery branches (with some vertebral and occipital contribution), supplies the arterial circle. A direct internal carotid supply is the pattern of the horse and dog.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

5 · Aesthesiology (sense organs) of the ox · medium

Which type of lingual papilla is absent from the ox tongue?

  1. Vallate (circumvallate) papillae
  2. Fungiform papillae
  3. Filiform papillae
  4. Foliate papillae
Answer and working

D. Foliate papillae

Ruminants have filiform, conical, lenticular, fungiform and vallate papillae but no foliate papillae; the horse and dog have foliate papillae on the lateral margins near the palatoglossal arch.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

6 · Comparative splanchnology · hard

In which species does the pancreatic duct normally join the bile duct before entering the duodenum, while the accessory duct is usually absent?

  1. Ox
  2. Pig
  3. Sheep and goat
  4. Horse
Answer and working

C. Sheep and goat

In small ruminants the pancreatic duct joins the bile duct. In the ox and pig pancreatic secretion usually enters through the accessory duct alone, and the horse and dog generally retain both ducts.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

7 · Comparative splanchnology · hard

Which feature of the mare's ovary is unique among domestic species?

  1. An ovulation fossa through which ova are released
  2. A mulberry-like surface of follicles
  3. An almond shape with a corpus luteum protruding from its surface
  4. Enclosure in a complete ovarian bursa
Answer and working

A. An ovulation fossa through which ova are released

The equine ovary is kidney-shaped, with a cortex inside a medulla-like zone and ovulation only at the ovulation fossa. The mulberry appearance is the sow and the almond shape the cow; a nearly closed bursa is found in the bitch.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

8 · Boundaries of body cavities and pleural and peritoneal reflections · hard

Approximately how far caudally does the dorsal part of the clinical lung field extend in the ox and in the horse?

  1. Ox about the 16th intercostal space; horse about the 11th rib
  2. Both about the 13th
  3. Ox the last rib; horse the 8th intercostal space
  4. Ox about the 11th intercostal space; horse about the 16th
Answer and working

D. Ox about the 11th intercostal space; horse about the 16th

The basal border of the lung runs from about the sixth costochondral junction to about the 11th intercostal space dorsally in the ox, and to about the 16th in the horse, which has 18 ribs. Texts vary by one space and the line moves with breathing.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

9 · Applied and topographic anatomy: injection sites, nerve blocks and surgical approaches · hard

In the distal paravertebral technique for flank anaesthesia in cattle, local anaesthetic is deposited at the ends of the transverse processes of which lumbar vertebrae?

  1. L1, L2 and L3
  2. L2, L3 and L5
  3. T13, L1 and L2
  4. L1, L2 and L4
Answer and working

D. L1, L2 and L4

The distal method blocks the dorsal and ventral branches of T13, L1 and L2 as they cross the tips of the transverse processes of L1, L2 and L4. L1, L2 and L3 are confused with the proximal landmarks, and T13, L1, L2 are the nerves, not the sites.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

10 · Functional anatomy · medium

What is the function of the pampiniform plexus around the testicular artery?

  1. Production of testosterone by the Leydig cells within the plexus
  2. Countercurrent cooling of arterial blood entering the testis
  3. Storage of spermatozoa
  4. Contraction of the scrotum
Answer and working

B. Countercurrent cooling of arterial blood entering the testis

Cool venous blood leaving the testis in the plexus absorbs heat from the coiled testicular artery, keeping the testis below body temperature for spermatogenesis. Testosterone comes from interstitial cells and sperm are stored in the epididymis.

Further reading: Dyce, Sack and Wensing, Textbook of Veterinary Anatomy

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Read the subject

Veterinary Gross AnatomyThe full study manual, free ICAR AIEEAFormat, sections and how it has changed

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Veterinary Gross Anatomy for other exams

National Practising Veterinarian Qualification Examination · ChinaNational Licensure Examination for Veterinarians · NepalVeterinarian Licensure Examination · PhilippinesRPSC Veterinary Officer · IndiaTNPSC Animal Husbandry & Veterinary Science, Code 396 · IndiaENADE · BrazilNational Veterinary Examination · JapanICAR AICE-JRF/SRF · India

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