1. Rat Dissection Scientific Name: Rattus norvegicus Common Name: Rat
RATS
Scientific Name: Rattus norvegicus
Common Name: Rat
Kingdom- Animalia
Phylum- Chordata
Subphylum- Vertebrata
Class- Mammalia
Order- Rodentia

2. Rat Dissection
RATS
The following slides are intended to help you with dissection of the rat and then to review for the lab practical that will follow.

3. Rat Dissection
SOURCES
The following web sites were used to obtain various dissection pictures.
(1) 15/biolab15_1.html
(2)
(3)
(4)
(5)
(6)
(7) This has an excellent self quiz!
Urogenital Tutorial-

4. Rat Dissection
REMOVING SKIN
Source #4

5. Rat Dissection
REMOVING SKIN
Source #7

6. Rat Dissection
REMOVING SKIN
Source #4

7. Rat Dissection
MUSCLES
Source #5

8. Rat Dissection
MUSCLES
Source #1

9. Rat Dissection
MUSCLES
Source #5

10. Rat Dissection
MUSCLES
Source #5

11. Rat Dissection
MUSCLES
Source #5

12. Rat Dissection
MUSCLES
Source #1

13. Rat Dissection
MUSCLES
Source #1

14. Rat Dissection
MUSCLES
Source #5

15. Rat Dissection
MUSCLES
Source #5

16. Rat Dissection
MUSCLES
Source #5

17. Rat Dissection
MUSCLES
Source #5

18. Rat Dissection
MUSCLES
Source #5

19. Rat Dissection
MUSCLES
Source #5

20. Rat Dissection
ORAL CAVITY
Source #6

21. Rat Dissection
ORAL CAVITY
Source #6

22. Rat Dissection
ABDOMINAL CAVITY
Source #4

23. Rat Dissection
ABDOMINAL CAVITY
Source #4

24. Rat Dissection
ABDOMINAL CAVITY
Source #7

25. Rat Dissection
DIGESTIVE ORGANS
Source #1

26. Rat Dissection
DIGESTIVE ORGANS
Source #6

27. Rat Dissection
DIGESTIVE ORGANS
Source #6

28. Rat Dissection
DIGESTIVE ORGANS
Source #1

29. Rat Dissection
DIGESTIVE ORGANS
Source #5

30. Rat Dissection
DIGESTIVE ORGANS
Source #1

31. Rat Dissection
DIGESTIVE ORGANS
Source #6

32. Rat Dissection
DIGESTIVE ORGANS
Source #1

33. Rat Dissection THORACIC CAVITY Source #1
Source #1

34. Rat Dissection
HEART + LUNGS
Source #5

35. Rat Dissection
RESPIRATORY ORGANS
Source #1

36. Rat Dissection
CIRCULATORY ORGANS
Source #1

37. Rat Dissection
HEART
Source #5

38. Rat Dissection
CIRCULATORY ORGANS
Source #1

39. Rat Dissection
UROGENITAL ORGANS
Source #1

40. Rat Dissection
EXCRETORY ORGANS
Source #5

41. Rat Dissection
UROGENITAL ORGANS
Source #5

42. Rat Dissection Trachea Heart Lung Diaphragm THORACIC CAVITY
Review and Quiz Yourself
Rat Dissection
THORACIC CAVITY
Trachea
Heart
Lung
Diaphragm
Source #2

43. Rat Dissection Right Atrium Right Ventricle Left Atrium Left Ventricle
Review and Quiz Yourself
Rat Dissection
HEART
Right Atrium
Right Ventricle
Left Atrium
Left Ventricle
Source #2

44. Rat Dissection Jugular Vein Carotid Artery Superior Vena Cava
Review and Quiz Yourself
Rat Dissection
THORACIC CIRCULATION
Jugular Vein
Carotid Artery
Superior Vena Cava
Ascending Aorta
Atrium (right)
Ventricles
Source #2

45. Rat Dissection ABDOMINAL CAVITY Source #1
You should be familiar with the order of the parts of the alimentary canal. Following the path that food would take, we would pass through:
Oral Cavity
Pharynx
Esophagus
Stomach
Pyloric Sphincter
Small Intestine
Duodenum
Jejunum
Ileum
Large Intestine
Cecum
Colon - Ascending Limb - Transverse Limb - Descending Limb
Rectum
Anus
Source #1

46. Rat Dissection ABDOMINAL CAVITY 1. Liver 2. Stomach 3. Pancreas
Review and Quiz Yourself
Rat Dissection
ABDOMINAL CAVITY
1. Liver
2. Stomach
3. Pancreas
4. Duodenum
5. Small Intestines
6. Cecum
7. Urinary Bladder
Source #2

47. ABDOMINAL CIRCULATION
Review and Quiz Yourself
Rat Dissection
ABDOMINAL CIRCULATION
1. Abdominal Aorta
2. Renal Artery (left)
3. Renal Vein (left)
4. Inferior Vena Cava
5. Hepatic Portal Vein
Source #2

48. MALE REPRODUCTIVE ORGANS
Review and Quiz Yourself
Rat Dissection
MALE REPRODUCTIVE ORGANS
1. Coagulating Gland
2. Urinary Bladder
3. Vas Deferens
4. Epididymis
5. Small Intestines
6. Seminal Vesicle
7. Prostate Gland
8. Penis
9. Testis
10.Scrotum
Source #2

49. FEMALE REPRODUCTIVE ORGANS
Review and Quiz Yourself
Rat Dissection
FEMALE REPRODUCTIVE ORGANS
Stomach
Kidney
Ovary
Oviduct
Uterine Horn
Large Intestine
Urinary Bladder
Source #2

50. Rat Dissection 10. 13. 15. Masseter Biceps Brachii Rib Cage
Review and Quiz Yourself
Rat Dissection
TAGGED ORGANS 13
10.
13.
15.
Masseter
Biceps Brachii
Rib Cage
Source #7

51. Rat Dissection 5. 9. 22. 27. Esophagus Lung Trachea Heart
Review and Quiz Yourself
Rat Dissection
TAGGED ORGANS 5. 9.
22.
27.
Esophagus
Lung
Trachea
Heart
Source #7

52. Rat Dissection 3. 7. 8. 11. 17. 18. Diaphragm Cecum Liver Ovary
Review and Quiz Yourself
Rat Dissection
TAGGED ORGANS 3. 7. 8.
11.
17.
18.
Diaphragm
Cecum
Liver
Ovary
Small Intestine
Spleen
Source #7

53. Rat Dissection 24. 26. Urinary Bladder Uterine Horn TAGGED ORGANS
Review and Quiz Yourself
Rat Dissection
TAGGED ORGANS
24.
26.
Urinary Bladder
Uterine Horn
Source #7

54. Rat Dissection 1. Adrenal Gland 6. 20. 23. Kidney 25. Stomach Ureter
Review and Quiz Yourself
Rat Dissection
TAGGED ORGANS 20 25 1. 6.
20.
23.
25.
Adrenal Gland
Kidney
Stomach
Ureter
Rectum
Source #7

55. Rat Dissection NAME THAT FUNCTION: ANATOMICAL TERMS Toward the midline
Review and Quiz Yourself
Rat Dissection
ANATOMICAL TERMS
NAME THAT FUNCTION:
Here’s a word bank to help you out: Caudal Cranial Distal Dorsal Lateral Medial Proximal Ventral
Toward the midline
Toward the back (upper surface of body)
Toward the tail
Toward the side
Farthest from the point of attachment
Toward the belly (underside of body)
Closest to the point of attachment
Toward the head
Medial
Dorsal
Caudal
Lateral
Distal
Ventral
Proximal
Cranial

56. Rat Dissection NAME THAT FUNCTION: ANATOMICAL TERMS
Review and Quiz Yourself
Rat Dissection
ANATOMICAL TERMS
NAME THAT FUNCTION:
The term referring to bending of a joint
The term referring to movement of an appendage toward the long axis of the body
The term referring to straightening of a joint
The term referring to movement of an appendage away from the long axis of the body
Flexion
Adduction
Extension
Abduction

57. Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Vibrissae
Review and Quiz Yourself
Rat Dissection
ORGAN FUNCTION
NAME THAT ORGAN:
Vibrissae
Here’s a word bank to help you out: Mesentery Nares Peritoneum Pinna Septum Vibrissae Viscera
The whiskers, which have a sensory function
The flap-like external ear that directs sound waves into the ear opening
Paired openings leading into the nose
Organs of the thoracic and abdominal cavities
A partition or wall separating 2 cavities
A membrane which suspends the organs
Shiny membrane that lines the abdominal cavity
Pinna
Nares
Viscera
Septum
Mesentery
Peritoneum

58. Rat Dissection NAME THAT MUSCLE: ORGAN FUNCTION Biceps Femoris
Review and Quiz Yourself
Rat Dissection
ORGAN FUNCTION
NAME THAT MUSCLE:
Here’s a word bank to help you out: Biceps Brachii Biceps Femoris External Obliques Gastrocnemius Gluteus Maximus Gracilis Latissimus Dorsi Masseter Pectoralis Major Triceps Brachi
Biceps Femoris
Gluteus Maximus or
Abducts the thigh
Extends the forelimb
Constricts the abdomen
Closes the jaw
Adducts the thigh
Flexes the forelimb
Draws the forelimb toward the chest
Extends the foot
Moves the forelimb dorsally + caudally
Triceps Brachii
External Obliques
Masseter
Gracilis
Biceps Brachii
Pectoralis Major
Gastrocnemius
Latissimus Dorsi

59. Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION
Review and Quiz Yourself
Rat Dissection
ORGAN FUNCTION
NAME THAT ORGAN:
Here’s a word bank to help you out: Diaphragm Hard Palate Lungs Soft Palate Teeth Thymus Gland Thyroid Gland Tongue Trachea
Produces WBC’s (White blood cells)
Moves food in mouth and tastes
Organs for gas exchange
Windpipe leading from pharynx to lungs
Bony anterior roof of mouth
Muscular sheet that separates the thoracic and abdominal cavities
Incisors (biting) and molars (grinding)
Muscular posterior roof of mouth
Affects metabolic rate and body growth
Thymus Gland
Tongue
Lungs
Trachae
Hard Palate
Diaphragm
Teeth
Soft Palate
Thyroid Gland

60. Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION
Review and Quiz Yourself
Rat Dissection
ORGAN FUNCTION
NAME THAT ORGAN:
Here’s a word bank to help you out: Cecum Esophagus Large Intestine Liver Pancreas Small Intestine Spleen Stomach Rectum Rugae
Produces insulin for glucose metabolism
Aids in digestion of proteins
Food tube from pharynx to stomach
Digests and absorbs nutrients
Folds in stomach that help mix food
Secretes bile, cleans blood, stores glycogen
Cleans blood, removes old RBC’s
Reabsorption of water
Blind pouch where ileum joins colon
End of intestines, compaction of feces
Pancreas
Stomach
Esophagus
Small Intestines
Rugae
Liver
Spleen
Large Intestine
Cecum
Rectum

61. Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Kidney
Review and Quiz Yourself
Rat Dissection
ORGAN FUNCTION
NAME THAT ORGAN:
Here’s a word bank to help you out: Bladder Kidney Ovary Prostate Scrotum Seminal Vesicle Testes Ureter Uterine Horn
Kidney
Removes wastes + excess H20 from blood
Houses developing fetuses
Produces and stores sperm
Stores urine before excretion
Secretes a fluid that aids sperm survival and motility
Produces eggs
Carry urine from kidney to bladder
Secretes a fluid that nourishes sperm
Sac that holds the testes
Uterine Horn
Testes
Bladder
Prostate
Ovary
Ureter
Seminal Vesicle
Scrotum

62. Rat Dissection NAME THAT ORGAN: ORGAN FUNCTION Pulmonary Artery
Review and Quiz Yourself
Rat Dissection
ORGAN FUNCTION
NAME THAT ORGAN:
Pulmonary Artery
Here’s a word bank to help you out: Abdominal Aorta Aorta Atria Common Carotid Pericardial Sac Pulmonary Artery Renal Artery Vena Cava Ventricles
Takes blood from heart to lungs
Large veins take blood to right atrium
Top chambers, receive blood
Membrane around heart
Artery taking blood to head
Bottom chambers that pump blood out
Largest artery taking blood from left ventricle
Lower descending aorta takes blood to lower trunk and legs
Takes blood to kidneys
Vena Cava
Atria
Pericardial Sac
Common Carotid
Ventricles
Aorta
Abdominal Aorta
Renal Artery