TOPIC 2 - COMPARATIVE OSTEOLOGY Flashcards
In horse, the rostral half of the skull is formed by what bone?
Frontal bone
In horse, is there a presence of upper incisor?
Yes
Horse has complete bony orbit. True or False?
True
This animal’s skull has presence of pointed and slender nasal bone.
Horse
This animal’s skull has absence of upper incisors.
Sheep
Goat
Cattle
This animal’s skull frontal bone forms the entire calvaria or roof of skull.
Ox/Cattle
This animal’s skull has broader rostral end of nasal bone.
Ox/Cattle
Cattle has incomplete bony orbit. True or False?
False
Other term for horn
Cornual process
This animal’s skull has presence of deeply concaved maxilla.
Pig
This animal’s skull has presence of concave surface or outline extending from the frontal up to the nasal bone.
Pig
Horse, cattle, and pig has complete bony orbit. True or False?
False, pig has incomplete bony orbit.
This animal’s skull has presence of convex maxillary surface.
Sheep
Sheep has complete bony orbit. True or False?
True
Sheep, cattle, goat, and giraffe have dental pads. True or False?
True
This animal’s skull has presence of elongated nasal bone and maxilla.
Dog
This animal’s skull has narrow cranial vault or calvaria of the skull.
Dog
Dog has incomplete bony orbit. True or False?
True
This animal’s skull has shorter nasal bone and maxilla.
Cat
This animal’s skull has broader calvaria or cranial vault.
Cat
Cranial vault in cat and dogs are formed by what bones?
Parietal and frontal bones.
Same as pig, dog, and giraffe, cat has incomplete bony orbit. True or False.
False, giraffe has complete bony orbit.
Give the vertebral formula of horse.
C7 - T18 - L6 - S5 - CD15-20
Give the vertebral formula of ox/cattle.
C7 - T13 - L6 - S5 - CD18-20
Give the vertebral formula of sheep.
C7 - T13 - L6-7 - S4 - CD16-18
Give the vertebral formula of pig.
C7 - T14-15 - L6-7 - S4 - CD20-23
Give the vertebral formula of goat.
C7 - T13 - L7 - S4 - CD12
Give the vertebral formula of dog.
C7 - T13 - L7 - S3 - CD20-23
Give the vertebral formula of cat.
C7 - T13 - L7 - S3 - CD20-23
Give the vertebral formula of chicken.
C14 - T7 - LSV14 - CD6
The 6 caudal vertebra of chicken is also called as?
Pygostyle
Lumbo-sacral mass is composed of how many vertebrae?
16
In lumbo-sacral mass of chicken, what vertebra is/are fused to it?
Last thoracic
First caudal vertebra
What are the two extremities of ribs?
- Sternal
- Vertebral
The vertebral extremity of ribs presents the ___, ___, and ___.
Head, neck, and tubercle.
As a rule, there is always one more pair of sternal ribs than there are in ___.
Sternebrae (sternal segments)
The ___ of a rib articulates with body of vertebrae of same serial number and that of the one in front.
Head
Give the rib pairs, sternal, asternal, and sternebrae of horse.
R18 - S8 - AS10 - SN7
The tubercle of a rib articulates with the ___ ___ of the vertebra of the same serial number.
Transverse process
Give the rib pairs, sternal, asternal, and sternebrae of ox/cattle.
R13 - S8 - A5 - SN7
Give the rib pairs, sternal, asternal, and sternebrae of sheep.
R13 - S8 - A5 - SN7
Give the rib pairs, sternal, asternal, and sternebrae of pig.
R14 - S7 - A7 - SN6
Give the rib pairs, sternal, asternall, and sternebrae of dog.
R13 - S9 - A4 - SN8
Ribs is an aberrant (abnormal) long bone with form the lateral wall of ___; it articulates dorsally with ____ ____; ventrally with ____.
thorax, thoracic vertebra, sternum
This animal has ribs that are narrow shaft and strongly curved in dorsal third.
Horse
This animal’s ribs are wide, flat shaft, and log neck.
Ox/Cattle
This animal’s ribs has narrow shaft with distinct angle.
Pig
This animal’s ribs has cylindrical shaft.
Dog
This animal’s scapula’s spine fades out distally and has trapezius tubercle.
Horse
This animal’s scapula has spine that extends to dorsal border and distinctly triangular.
Cattle/ox/sheep
This animal’s scapula has prominent trapezius tubercle that overhangs to infraspinous fossa.
Pig
This animal’s scapula has spine that bisects laterally and has distinct acromion.
Dog
Other term for humerus
Clod bone
In determining the side and proximity of scapula, spine is ____ and tuber scapulae are ____.
Lateral, anterior
In determining the side and proximity of humerus, crest is ____ and head is ____.
Lateral, posterior
The humerus of this animal has bicipital groove opposite the humeral head and is divided by a ridge.
Horse
The humerus of this animal has massive lateral tuberosity which overhangs bicipital groove.
Ox/cattle
The humerus of this animal has lateral tuberosity that almost converts bicipital groove into foramen.
Pig
The humerus of this animal has single lateral tuberosity and at distal end.
Dog
The humerus of this animal has supratrochlear foramen in which the coracoid and olecranon fossa communicate through.
Dog
Radius and ulna are two long bones forming the skeleton of ____.
Forearm
The ulna of this animal is fused 2/3 of the way down of the shaft of the radius.
Horse
The ulna of this animal is complete and projects or extends distally up to the end of the radius.
Ox/cattle
The ulna of this animal is extremely slender and not necessarily fused with radius.
Sheep
The ulna of this animal is massive and articulates with radius and ulnar carpal.
Pig
The ulna of this dog is never fused and has 3 distinct prominences at proximal end.
Dog
The 3 distinct prominences of the ulna in dog is called as?
Trituberculate summit
The left and right forms the pelvic girdle but “bony pelvis” is made up of ____, ____, _____, _____, and _____.
Pelvic girdle, sacrum, 1st and 2nd c.d vertebrae.
Os coxae is the 2 sides of pelvic girdle. True or False?
False, os coxae occupies 1 side only.
The pelvic girdle of this animal has gluteal line in the wing of ilium.
Horse
The pelvic girdle of this animal has 3 distinct prominences on sciatic tuber.
Ox/cattle
The pelvic girdle of this animal has wide obturator foramen and sharp medial border.
Ox/cattle
The pelvic girdle of this animal is same with ox, but smaller and slender.
Sheep
The pelvic girdle of this animal has wing of ilium divided into 2 fossae by distinct gluteal line.
Pig
The pelvic girdle of this animal has wing of ilium distinctly concave.
Dog
It forms the bone of thigh.
Femur
Femur articulates proximally with ___ and distally with ___ and ___.
Os coxae, tibia and fibula
In determining the side and proximity of femur, head is ____ and trochlea is ____ and ____.
Medial, distal and anterior
The femur of this animal has presence of 3 trochanters.
Horse
The femur of this animal has less prominent trochanters.
Ox
The femur of this animal is the same with ox, but smaller and slender.
Sheep
The femur of this animal is characteristically smaller than horse and ox but has massive shaft.
Pig
The femur of this animal has size and outline that are similar to sheep but more slender.
Dog
Fibula is also called as ?
Brooch bone
Only the head and shaft of fibula is well-developed in this animal.
Horse
The fibula of this animal is complete and marked by presence of lateral malleolus.
Ox
In this animal, the tibial crest is long and distinct.
Pig
In this animal, the tibial crest is prominent and marked with impression.
Dog
Other term for radial carpal
Scaphoid
Other term for ulnar carpal
Triquetrum
Other term for accessory carpal
Pisiforme
Other term for carpal 1
Trapezium
Other term for carpal 2
Trapezoideum
Other term for carpal 3
Os capitatum
Other term for carpal 4
Os hamatum
Other term for tibial tarsal
Talus
Other term for fibular tarsal
Calcaneus
Other term for central tarsal
Navicular
Other term for tarsal 1
Os cuneiform mediale
Other term for tarsal 2
Os cuneiform intermedium
Other term for tarsal 3
Os cuneiform laterale
Other term for tarsal 4
Os cuboideum
This animal’s skull has presence of 2 big anterior nares or nostrils.
Chicken
At the junction of mandible and skull of chicken, there is a presence of ____.
Quadrate bone
It is a square-shaped bone that allows extensive opening of mouth in chicken and birds.
Quadrate bone