Which of the following is not a primary function of the skeletal system?
All of the above.
Storing inorganic salts.
Attachment sites for muscles.
Support and Protection.
The Correct Answer is A
The skeletal system has five main functions: support, movement, protection, mineral and fat storage, and blood cell formation.
All of the other choices are primary functions of the skeletal system.
Choice B is incorrect because storing inorganic salts is one of the functions of the skeletal system.
The bone tissue acts as a reservoir for minerals like calcium and phosphorus.
Choice C is incorrect because attachment sites for muscles is one of the functions of the skeletal system.
Bones facilitate movement by serving as points of attachment for muscles.
Choice D is incorrect because support and protection is one of the functions of the skeletal system.
Bones provide a scaffold that supports the body and protects the internal organs.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["Mandible protraction of the temporomandibular joint (TMJ)."]
Explanation
Mandible protraction refers to the movement of the lower jaw (mandible) forwards, away from its rest position.
This movement is also known as jaw thrust.
The joint involved in mandible protraction is the temporomandibular joint (TMJ), which is a synovial joint that connects the mandible to the temporal bone of the skull.
This joint allows for a variety of movements, including:
Mandible retraction: This refers to the movement of the lower jaw backward, towards the skull.
Mandible elevation: This refers to the movement of the lower jaw upwards, towards the upper jaw.
Mandible depression: This refers to the movement of the lower jaw downwards, away from the upper jaw.
Mandible lateral excursion: This refers to the movement of the lower jaw to either the left or the right.
Mandible medial excursion: This refers to the movement of the lower jaw back to its midline position after a lateral excursion.
These movements of the TMJ are essential for functions such as chewing, speaking, and swallowing.
However, excessive or repetitive movements of the jaw can lead to TMJ disorders, which can cause pain, clicking, popping, or locking of the jaw.
Correct Answer is C
Explanation
Dorsiflexion is the movement of the foot upwards towards the shin.
It involves the contraction of the muscles in the anterior part of the leg, such as the tibialis anterior.
Dorsiflexion is used when walking or running.
Choice A is incorrect because eversion is the movement of the foot outwards, away from the midline of the body.
Choice B is incorrect because plantarflexion is the movement of the foot downwards, away from the shin.
Choice D is incorrect because inversion is the movement of the foot inwards, towards the midline of the body.
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