#1
Which muscle is primarily responsible for neck extension?
Splenius capitis
ExplanationPrimary extensor of the neck.
#2
The trapezius muscle assists in neck extension by:
Extending the head
ExplanationContributes to head extension.
#3
Which of the following is not a function of the posterior neck muscles?
Neck flexion
ExplanationPosterior neck muscles do not flex the neck.
#4
Which muscle is not typically involved in the movement of neck extension?
Sternocleidomastoid
ExplanationNot a primary muscle for neck extension.
#5
Which muscle group includes the iliocostalis, longissimus, and spinalis muscles?
Erector spinae group
ExplanationIliocostalis, longissimus, spinalis muscles form erector spinae group.
#6
Which of the following muscles is not involved in neck extension?
Platysma
ExplanationNot a muscle involved in neck extension.
#7
Which muscle works synergistically with the splenius capitis during neck extension?
Semispinalis capitis
ExplanationSynergistic extensor with splenius capitis.
#8
What is the role of the erector spinae in neck extension?
It extends the vertebral column and head
ExplanationExtends vertebral column and head.
#9
Which muscle is directly beneath the sternocleidomastoid and assists in neck extension?
Trapezius
ExplanationMuscle beneath sternocleidomastoid aiding extension.
#10
In addition to the splenius capitis, which other muscle is considered a major extensor of the head?
Splenius cervicis
ExplanationMajor head extensor.
#11
Advanced: The deep muscles of the neck involved in extension, such as the semispinalis capitis, belong to which muscle group?
The posterior vertebral muscles
ExplanationDeep neck extensors.
#12
The suboccipital muscles are important for which aspect of neck extension?
Fine-tuning the movement
ExplanationFine-tuning neck extension.
#13
Advanced: How does the function of the longissimus capitis differ from that of the scalene muscles in the context of neck movements?
The longissimus capitis extends and laterally flexes the neck, while the scalene muscles primarily assist in breathing.
ExplanationLongissimus capitis extends and laterally flexes neck, scalene muscles aid breathing.
#14
Advanced: Which of the following muscles does not insert into the mastoid process of the temporal bone?
Longissimus capitis
ExplanationDoes not insert into mastoid process.
#15
What is the unique action of the longissimus cervicis in neck movements?
It assists in lateral neck flexion and extension
ExplanationAssists in lateral flexion and extension of the neck.