Bones ( Comparative Anatomy) Flashcards
A set of bones that supports the tongue and larynx
Hyoid apparatus
In this animal/s the epihyoid is the longest bone in the Hyoid apparatus
Dog and Cat
The Hyoid apparatus characteristics of these animal is like this =
Lingual process: Absent.
Stylohyoid and Epihyoid: Cylindrical in shape.
Dog, Cat
The hyoid apparatus connects to the skull via the mastoid process of the temporal bone. (What animal?)
Dog and Cat
In cattle, what is the characteristic of their Basihyoid?
Has a short lingual process
In cattle, what is the characteristic of their Stylohyoid?
Laterally flattened
What animal has their hyoid appartus connects to the skull via the styloid process of the temporal bone.
Cattle
The Horse’s basihyoid has a ____ lingual process.
Long lingual process
In horse, what is the characteristic of their Stylohyoid?
Laterally flattened
In Swine/Pig, their epihyoid is represented by a ligament called?
ligamentum epihyoideum
The horse’s epihyoid’s characteristic is -?
Smallest and fused with the stylohyoid
What animal has their hyoid apparatus connects to the skull via the styloid process of the temporal bone.
Horse
The shape of Hyoid apparatus is?
U-shaped
The hyoid apparatus of this animal connects to the skull via the nuchal process of the temporal bone.
Pig
The hyoid apparatus is a “U-shaped” structure that supports what structures?
tongue, larynx, and pharynx
A bony projection extending upward from the vertebral arch.
Spinous Process
A tooth-like projection from the second cervical vertebra (axis), enabling head rotation.
Dens (Odontoid Process)
Projections extending laterally from the vertebral arch.
Transverse Process
A hole in the transverse process, present in the cervical vertebrae of some species.
Function: Passage for the vertebral artery and vein.
Transverse Foramen
Species-Specific Features
of the Axis (C2)
Dens: Sharp and tooth-like
What animal?
Dog
In the axis, what animal/s have this characteristic?
Dens: Spout-shaped
Cattle and Horse
Dens are spout-shaped, and the spinous process (the bony projection) is rectangular in shape.
Cattle
Spout-shaped dens, but the spinous process is bifid.
Horse
The axis of this animal have a narrow, high spinous process pointing towards the tail. (Caudally)
Pig
Axis C2
The spinous process is narrow and high, directed caudally (towards the tail).
Pig
Atlas (the first cervical vertebra)
Has Alar notch (instead of the alar foramen). What animal?
Dog
Atlas of this animal has NO transverse foramen.
Dog
The dog has an alar notch rather than a full alar foramen, and it lacks the transverse foramen.
True or False?
True
Transverse foramen is absent in the atlas of this animal.
Cattle
Three foramina are present in the atlas of this animal/s
Horse and Pig
The transverse foramen is situated in the posterior border of the wing of the Atlas. What animal? (They got three foramina)
Pig
What animal, where the atlas is a small ring that articulates with the single occipital condyle via a depression in its ventral arch.
Bird
Dens are typically tooth-like in shape. (AXIS C2)
Dog
Thoracic Vertebrae
The first thoracic spine is the tallest, and the spinous processes (the bony projections) gradually get shorter from the first to the last thoracic vertebra.
Dog
T11 is their Anticlinal in thoracic vertebrae
Dog
The Thoracic Vertebrae of this animal are wide and compressed dorsoventrally
Dog
Under thoracic vertebrae
The first three vertebrae increase in height, and the spines get progressively shorter until the 12th-13th vertebra.
Cattle
T13 is the anticlinal in their thoracic vertebrae
Cattle/Bovine
Which animal has their thoracic vertebrae much larger?
Cattle ( The thoracic vertebrae are larger than in the horse. )
T16 is the anticlinal.
Horse
In their thoracic vertebrae,
Spinous processes:
1st spine (T1) is small.
The first four thoracic vertebrae increase in height.
Processes gradually shorten up to T13–T14.
Horse/Equine
In the Horse what thoracic vertebrae form the the osseous base of the withers?
first three or four thoracic vertebrae
In horse, The first three or four thoracic vertebrae form ___ ___ _ _ ____.
osseous base of the withers
Anticlinal vertebra: T10.
Pig
Well-developed spinous process, but the last vertebrae in this region show a prominent ventral spinous process, which is a unique characteristic.
Bird
The vertebrae at the thoracic region of this animal is partially fused into notarium.
Bird/Avian
Specific to Avian,
A fused structure formed by the last cervical vertebra and the first three thoracic vertebrae.
Notarium
Lumbar Vertebrae
In dog, the first _ or _ lumbar vertebrae have spinous processes that become progressively longer
The first four or five lumbar vertebrae
The transverse process of the lumbar vertebrae of a dog has what orientation?
Have a cranioventral inclination (pointing forward and downward).
The longest transverse process of the lumbar vertebrae of a canine is on the ?
5th or 6th lumbar vertebra
The longest transverse process of the lumbar vertebrae of a bovine is on the ?
3rd or 4th lumbar vertebra
The transverse process of the lumbar vertebrae of a bovine has what orientation?
Oriented horizontally.
The spinous process of the lumbar vertebrae of a bovine has what orientation?
Show a caudal inclination
The spinous process of the lumbar vertebrae of small ruminants has what orientation?
Oriented perpendicular to the long axis of the vertebrae
The transverse process of the lumbar vertebrae of small ruminants has what orientation?
Positioned horizontally, similar to cattle.
What number of lumbar vertebra has the longest transverse process in Goat/Sheep?
The 3rd or 4th lumbar vertebra has the longest transverse process
In Horses, what number of lumbar vertebra has the longest transverse process?
3rd or 4th lumbar vertebra has the longest transverse process
What is the position of the transverse process of the lumbar vertebrae in Horse?
Positioned horizontally
This animal Have a cranioventral inclination on their transverse process.
Swine/Pig
In Pigs, what number of lumbar vertebra has the longest transverse process?
3rd or 4th lumbar vertebra has the longest transverse process
In birds, the last one or two thoracic vertebrae fuse with the lumbar, sacral, and first caudal vertebrae called:
synsacrum
TIPS TO REVIEW:
Inclination of Transverse Processes:
Cranioventral (Dogs, Pigs) → Think “angled forward for flexibility.”
Horizontal (Cattle, Sheep, Goats, Horses) → Think “sturdy and stable.”
=
Longest Transverse Process:
Dogs: 5th or 6th lumbar vertebra.
Other Species: 3rd or 4th lumbar vertebra.
Take a Break for a while!
Sacrum Vertebrae
Shape: Quadrilateral (four-sided).
Spinous processes:
Unfused; there are three separate spines.
Dog
Sacrum shape of dogs?
Quadrilateral
What animal in their sacrum is unfused?
Dogs and Horses
The Sacrum shape of Equine?
Triangular
The horse has an unfused spinous process therefore, how many separate spines do they have now?
five separate spines
The canine dog has an unfused spinous process therefore, how many separate spines do they have now?
3
shape of the spinous process of a cattle in their sacrum?
Triangular
The spinous process of the sacrum of cattle is fused and is called -?
median sacral crest
The pig’s spinous process is replaced by what- (Sacrum vertebrae)
indistinct crest
In birds, they have a fused lumbosacral called —
synsacrum
Ribs & Sternum
what animal has a cylindrical shape
Dog
Ribs & Sternum
Horse’s ribs characteristic?
Has narrow shaft, strongly curved in dorsal third
Ribs of a dog is characterized by?
being a cylindrical shaft
The cattle’s ribs is what?
wide, has long neck and got a flat shaft
Pigs ribs are?
Narrow shaft and has a distinct angle
For avians, they have a floating ribs. Which pairs are these?
first two pairs are floating except for the first and last rib