Rat Dissection Rat Dissection l l l Scientific

Rat Dissection

Rat Dissection l l l Scientific Name: Rattus norvegicus Common Name: Rat Kingdom- Animalia Phylum- Chordata Class- Mammalia Order- Rodentia RATS

Dorsal Anterior Posterior Ventral

Naris Vibrissa Mammary papilla Urethral Orifice Anus Vaginal Orifice

Penis Scrotal Sack

Skinning the rat • Make a midventral incision as illustrated in the picture. Use your probe, scissors and finger to free the skin from the underlying tissue. • You should encounter two brownish muscles attached to the skin (the cutaneous maximus in the trunk area, and the platysma in the neck area). You will probably have to cut these muscles close to the skin before the skin can be removed.

Rat Dissection REMOVING SKIN

Rat Dissection REMOVING SKIN

Rat Dissection REMOVING SKIN

Masseter Biceps Pectoralis Major Triceps Latissimus Dorsi Oblique Rectus Abdominis Gastrocnemius

MUSCLES Rat Dissection Masseter Source #5

Rat Dissection MUSCLES

Rat Dissection MUSCLES Rectus Abdominis

Trapezius Latissimus Dorsi Oblique Deltoid Triceps

MUSCLES Rat Dissection Triceps Trapezius Deltoid Oblique

Latissimus Dorsi Oblique Trapezius Gastrocnemius Masseter Gluteus Deltoid Triceps

Diaphragm Lobe of Liver Small Intestine Esophagus Spleen Stomach Pancreas Large Intestine Cecum Small Intestine Appendix Rectum Anus

Rat Dissection ABDOMINAL CAVITY Source #4

Rat Dissection ABDOMINAL CAVITY Source #7

Cecum Large Intestine Source #1

Small Intestine

Cecum

Stomach behind pancreas

Aorta Heart Coronary Vessels Lung Rib (Cut) Diaphragm

Heart

Ovary Kidney Uterine Horn Ureter Vagina Bladder (Pulled to side) Vaginal Orifice Urethra Urethal Orifice Anus

Kidney Ureter Seminal vesicle Prostate gland Urinary bladder Urethra Vas deferens Penis Testis Scrotum (opened) Scrotum