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University of Delaware, Spring 2025, Dr. Gaab
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Cranial
Toward the head
Caudal
Away from the head, toward the tail region
Lateral
Away from the midline
Medial
Toward the midline
Dorsal
Toward the spine
Ventral
Away from the spine
Anterior
“Forward” as an animal is walking
Posterior
“Backward” as an animal is walking
Superior
(When standing) toward top-most section of body in elevation
Inferior
(When standing) toward bottom-most section of body in elevation
Proximal
Closer to the trunk of the body
Distal
Further from the trunk of the body
Palmar
Caudal aspect of the forelimb from the carpus down
Plantar
Caudal aspect of the hindlimb from the tarsus down
Axial
Aspect closer to the midline of a limb
Abaxial
Aspect facing away from the midline of a limb
Superficial
Towards the surface of the body
Deep
Away from the surface of the body
Volar
In a standing animal, the surface touching the ground
Rostral
On the head, towards the snout
Caudal (on the head)
On the head, away from the snout
Supine
Prone
Right Lateral Recumbancy
Left Lateral Recumbancy
Transverse Plane
Separates body into cranial and caudal parts
Dorsal Plane
Separates body into dorsal and ventral parts
Sagittal Plane
Separates body into left and right parts
Midsagittal Plane
(specifically on the midline) Separates the body into left and right parts
Cranial Segment
Black segment (furthest right)
Cervical Segment
Purple Segment (second from the right)
Thoracic Segment
Yellow Segment (Third from the right)
Lumbar Segment
Green Segment (third from left)
Sacral Segment
Red Segment (second from left)
Coccygeal Segment
Blue segment (First on left)
Cranial Cavity
#1
Nasal Cavity
#2
Oral Cavity
#3
Thoracic Cavity
#4
Abdominal Cavity
#5
Pelvic Cavity
#6
Epidermis
Top layer of skin
Dermis
Inner layer of skin
Arrector Pili muscle
Sebaceous Gland
Heart
(on rat)
Lungs
(on rat)
Trachea
#1
Esophagus
#2
Liver
(on rat)
Stomach
#2
Spleen
#4
Small Intestines
#5
Cecum
#6
Large Intestines
#7
Pericardium
The tissue directly adhered to the heart (you can’t see it, but the the question will ask what it is, probably in the context of the rat)
Anus
#2 (Dorsal to the vaginal opening. This is on a female rat)
Ovaries
Testes
Uterus (uterine horns)
Kidneys
#1
Ureters
Urinary Bladder
#3
Urethra
#1 (Caudal to the urinary bladder- this is on a female rat)
Brain
Foramen Magnum
Orbit
Tympanic Bulla
Occipital Condyles
Hard Palate
Zygomatic Arch
9/10 together
Frontal Bone
#6
Nasal Bone
#1
Maxillary Bone
#3
Incisive Bone
#2
Parietal Bone
#7
Palatine Bone
Zygomatic Bone
#10
Temporal Bone
#9
Occipital Bone
#8
Incisors
Canines
Premolars
Molars
Atlas
Axis
C3- C7
Sternebrae
Manubrium
Xiphoid
Xiphoid Cartilage
Clavicle
Epiphysis
Diaphysis
Metaphysis
Fossa
Condyle
Tuberosity
Spine
Sinus