1. PRACTICE RAT DISSECTION TEST

2. PRACTICE TEST
The test is normally called a dissection “practical”. This is how most dissection tests are given!
Pans of dissected rats are situated around the lab in strategic locations.
Each rat will have two-three numbered pins stuck in various structures.
A question card will accompany the rat and the pins.
You MUST be sure to read the question card as you look at the pins.

3. PRACTICE TEST 16 On some tests there will also be a written portion.
You will be given a word bank to assist you.
The photos in this practice test may or may not have pins in the rat but may simply use an arrow like in this pig example. 16

4. PRACTICE TEST
On the answer sheet for this practice test, go to number one and using the terms to know sheet from your dissection packet, go to number one. Use your dissection packet and your “Terms to know” packet to help you figure out the answer.

5. Questions 1. What term refers to the “tail-end” of the rat?
2. The moveable end of muscle attachment is known as the…
3. Muscles that straighten a body part such as the arm are……

6. Questions 4. What does cephalization mean?
5. A term that describes a paw or foot with 5 digits is….
6. A narrow band of dense regular connective tissue that connects muscle to bone is….

7. Questions
7. Appendages, such as arms and legs, are found on what division of the body?
8 & 9. Mammals may be distinguished from all other animals by the presence of?
10. How do you distinguish Rattus norvegicus from Rattus rattus in a laboratory bred rat? Be specific.

8. Questions
Identify the following structures – be sure to use the anatomical terms and not the common name. 11 12

9. Questions
Identify the following structures: 13 15 14

10. Questions
16. What is this reduced eye structure found in mammals?

11. Questions 17 & 18 The trunk of the body can be divided into?
19. What is the sex of this rat?

12. questions 20 & 21 What two parts of the rat’s foot left this print?
22. Rats place just their toes on the substrate. What type of gait is this?

13. Questions
23. What is the name of this tendon on the abdomen of the rat? 23

14. Questions 24. What muscle of the rat functions to elevate the jaw?
Cranial end
24. What muscle of the rat functions to elevate the jaw?
25. What muscle of the thorax has been separated in the photo?
Caudal end

15. questions
26. Of the muscles below; which originates on the humerus, inserts on the ulna, and extends the forearm?

16. questions 27. What is the origin of the latissimus dorsi?
28. What is the action of the external oblique?
29. What muscle is usually removed with the skinning of the rat?
30. What is the largest of the hind leg muscles of the rat?

17. Answers 1. caudal 2. Insertion 3. externsors
4. nervous tissue in well-defined head
5. pentadactyl
6. tendon
7. trunk
8/9 hair & mammary glands
10. length of tail; R.rattus tail is longer than body
11. vibrissae
12. pinna
13. nare
14. mouth

18. Answers 15. eye 16. plica semilunaris 17/18 thorax & abdomen 19. male
20/21 tori & claws
22. digitigrade
23. linea alba
24. masseter
25. pectoralis major
26. triceps brachii
27. thoracic & lumbar vertebrae
28. constrict abdominal region
29. cutaneous maximus
30. biceps femoris