PRACTICE RAT DISSECTION TEST

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PRACTICE RAT DISSECTION TEST
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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.

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PRACTICE TEST

• 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.

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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.

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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

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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.

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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.

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Questions

• Identify the following structures be sure to
  use the anatomical terms and not the common name.

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Questions

• Identify the following structures

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15
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Questions

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

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Questions

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

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questions

• 20 21 What two parts of the rats foot left
  this print?
• 22. Rats place just their toes on the substrate.
  What type of gait is this?

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Questions

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

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Questions
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
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questions

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

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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?

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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

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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