1.
What is the action of Pectoralis Minor?
Correct Answer
D. Draws the forelimb towards the midline
Explanation
The action of the Pectoralis Minor is to draw the forelimb towards the midline. This means that when the Pectoralis Minor muscle contracts, it pulls the forelimb closer to the midline of the body. This action is important for movements such as adduction of the arm, where the arm is brought closer to the body.
2.
What is number 2 pointing to?
Correct Answer
Teres Major
3.
What is number 3 pointing to?
Correct Answer
Infraspinatus
Explanation
The question is asking for the name of the muscle that is being pointed to by number 3. The correct answer is "Infraspinatus."
4.
Where does infraspinatus originate?
Correct Answer
A. From the surface of the infraspinous fossa
Explanation
The infraspinatus muscle originates from the surface of the infraspinous fossa. This is a depression located on the dorsal aspect of the scapula. The muscle attaches to this specific surface of the scapula, allowing it to function in the movement and stabilization of the shoulder joint.
5.
What is number 5 pointing to?
Correct Answer
Spinodeltoid
Explanation
The question is asking about the object that number 5 is pointing to. The correct answer is "Spinodeltoid," which suggests that number 5 is pointing to a specific muscle called the spinodeltoid.
6.
What muscle is synergistic with spinodeltoid?
Correct Answer
acromiodeltoid
Explanation
The acromiodeltoid muscle is synergistic with the spinodeltoid muscle. Synergistic muscles work together to produce a coordinated movement. In this case, both the acromiodeltoid and spinodeltoid muscles are involved in shoulder abduction, which is the movement of lifting the arm away from the body. The acromiodeltoid muscle assists the spinodeltoid muscle in this action, helping to stabilize and support the shoulder joint during abduction.
7.
What is number 8 pointing to?
Correct Answer
Biceps Brachii
Explanation
The number 8 is pointing to the Biceps Brachii muscle.
8.
Where does the xiphihumeralis insert?
Correct Answer
humerus
Explanation
The xiphihumeralis muscle inserts on the humerus.
9.
What is the action of the latissimus dorsi?
Correct Answer
C. Pulls forelimb dorsocaudally
Explanation
The action of the latissimus dorsi is to pull the forelimb dorsocaudally. This means that it helps in moving the forelimb towards the back of the body and in a downward direction. The latissimus dorsi muscle is located in the back and is responsible for various movements of the shoulder and arm.
10.
What muscle in Necturus is clavobrachialis homologous with?
Correct Answer
procoracohumeralis
Explanation
The muscle clavobrachialis in Necturus is homologous with the muscle procoracohumeralis. This means that these two muscles have a common evolutionary origin and share similar functions or structures.
11.
What muscle in Necturus is spinodeltoid homologous with?
Correct Answer
Dorsalis Scapulae
Explanation
The muscle spinodeltoid in Necturus is homologous with the muscle Dorsalis Scapulae. This means that these two muscles have a common evolutionary origin and share similar functions or structures.
12.
__________ inserts on the surface of the spinodeltoid muscle.
Correct Answer
A. Acromiodeltoid
Explanation
The acromiodeltoid inserts on the surface of the spinodeltoid muscle.
13.
Brachialis is homologous with what muscle from Necturus?
Correct Answer
Humeroantebrachialis
Explanation
The Brachialis muscle in Necturus is homologous to the Humeroantebrachialis muscle. Homologous muscles are those that have a similar structure and function in different species, indicating a common evolutionary origin. In this case, both the Brachialis muscle in Necturus and the Humeroantebrachialis muscle in another species share similarities in their location and function, suggesting that they have evolved from a common ancestor.
14.
What is number 4 pointing to?
Correct Answer
15.
What is number 5 pointing to?
Correct Answer
Acromiodeltoid
Explanation
The correct answer is Acromiodeltoid. The question is asking about what number 5 is pointing to, and the answer is Acromiodeltoid.
16.
Which one of these is not a head in triceps brachii?
Correct Answer
B. Ventral
Explanation
The triceps brachii is a muscle located on the back of the upper arm. It is composed of three heads: the long head, the lateral head, and the medial head. The term "ventral" refers to the belly or front side of the body, which is the opposite of the location of the triceps brachii. Therefore, "ventral" is not a head in the triceps brachii muscle.
17.
Lattisimus Dorsi inserts at the ______ surface of humerus at the ________ end.
Correct Answer
C. Medial and Proximal
Explanation
The correct answer is "Medial and Proximal". The lattisimus dorsi muscle inserts at the medial surface of the humerus, which is the inner side of the bone, and at the proximal end, which is the end closer to the body. This means that the muscle attaches to the inner side of the upper arm bone, closer to the body.