Avian Anatomy: Bones

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| By BlueMoonKin

BlueMoonKin

Community Contributor

Quizzes Created: 1 | Total Attempts: 772

Questions: 12 | Attempts: 791 | Updated: Mar 21, 2023

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Birds have a lightweight skeleton made of mostly thin and hollow bones. The keel-shaped sternum is where the powerful flight muscles attach to the body. During our study into the body of birds we covered most of the bones birds have in common. Take the quiz to refresh your memory.

Questions and Answers

1.

Identify the bone labeled 3
- A.
  
  Illium
- B.
  
  Femur
- C.
  
  Pubis
- D.
  
  Metacarpel
Correct Answer
C. Pubis

Explanation
The bone labeled 3 is the pubis. The pubis is one of the three bones that make up the hip bone, along with the ilium and ischium. It is located in the lower part of the pelvis and helps support the weight of the body.

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2.

Identify the bone HINT!!! It's in the leg
- A.
  
  Furcula
- B.
  
  Tibiatarsus
- C.
  
  Scapula
- D.
  
  Coracoid
Correct Answer
B. Tibiatarsus

Explanation
The correct answer is tibiatarsus. The hint provided states that the bone is in the leg, and the tibiatarsus is a bone found in the lower leg of birds. It is formed by the fusion of the tibia and the tarsal bones, and it provides support and strength to the leg for walking and perching. The other options listed, furcula, scapula, and coracoid, are not bones found in the leg but rather in other parts of the bird's body.

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3.

Identify the bone labeled 2
- A.
  
  Keel
- B.
  
  Sternum
- C.
  
  Tarsometatarsus
- D.
  
  Pygostyle
Correct Answer
B. Sternum

Explanation
The bone labeled 2 is the sternum. The sternum is a flat bone located in the center of the chest. It connects to the ribs and helps protect the heart and lungs.

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4.

Identify the bone HINT: it's located near the back
- A.
  
  Scapula
- B.
  
  Pygostyle
- C.
  
  Coracoid
- D.
  
  Femur
Correct Answer
A. Scapula

Explanation
The correct answer is scapula. The hint provided states that the bone is located near the back, which is a characteristic of the scapula. The other options, pygostyle, coracoid, and femur, are not located near the back and therefore do not match the given hint.

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5.
- A.
  
  Furcula
- B.
  
  Capometacarpus
- C.
  
  Tibiatarsus
- D.
  
  Femur
Correct Answer
D. Femur
6.

Identify the bone labeled 1
- A.
  
  Illium
- B.
  
  Ischium
- C.
  
  Pubis
- D.
  
  Funny bone
Correct Answer
A. Illium

Explanation
The correct answer is ilium. The ilium is one of the three bones that make up the hip bone, along with the ischium and pubis. It is the largest and most superior of the three bones, forming the upper part of the hip bone.

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7.

Identify the bone labeled 1
- A.
  
  Keel
- B.
  
  Sternum
- C.
  
  Pubis
- D.
  
  Humerus
Correct Answer
A. Keel

Explanation
The bone labeled 1 is called the keel.

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8.

Identify the bone HINT: it's in the arm
- A.
  
  Femur
- B.
  
  Coracoid
- C.
  
  Tarsometatarsus
- D.
  
  Humerus
Correct Answer
D. Humerus

Explanation
The correct answer is humerus. The humerus is a bone in the arm, specifically the upper arm bone. It is located between the shoulder and the elbow. The other options, femur, coracoid, and tarsometatarsus, are not bones in the arm but are found in different parts of the body.

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9.

Identify the bone labeled 2
- A.
  
  Ischium
- B.
  
  Illum
- C.
  
  Keel
- D.
  
  Sternum
Correct Answer
A. Ischium

Explanation
The bone labeled 2 is the ischium. The ischium is one of the three bones that make up the hip bone, along with the ilium and pubis. It is located at the lower and posterior part of the hip bone and helps to support the weight of the body when sitting.

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10.

Identify the bone HINT: It's in the arm
- A.
  
  Illum
- B.
  
  Femur
- C.
  
  Carpometacarpus
- D.
  
  Tarsometatarsus
Correct Answer
C. Carpometacarpus

Explanation
The correct answer is carpometacarpus. This bone is located in the arm. It is a compound bone that connects the wrist (carpus) to the fingers (metacarpals). In birds, the carpometacarpus is a fusion of several bones and is an important part of the wing structure.

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11.

Identify the bone HINT: It's in the leg
- A.
  
  Femur
- B.
  
  Tarsometatarsus
- C.
  
  Tibiatarsus
- D.
  
  Carpometacarpus
Correct Answer
B. Tarsometatarsus

Explanation
The correct answer is tarsometatarsus. The question asks to identify a bone that is in the leg, and out of the given options, the tarsometatarsus is the only bone that fits this description. The femur is the bone in the upper leg, the tibiatarsus is the bone in the lower leg, and the carpometacarpus is a bone found in the wing of birds. Therefore, the tarsometatarsus is the correct answer.

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12.

Identify the bone HINT: It's in the shoulder
- A.
  
  Scapula
- B.
  
  Coracoid
- C.
  
  Metacarpels
- D.
  
  Pygostyle
Correct Answer
B. Coracoid

Explanation
The correct answer is coracoid. The hint provided in the question states that the bone is in the shoulder, and the coracoid is indeed a bone that is located in the shoulder.

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