What nerves are affected by C5 C6 C7?
From the lateral cord, C5, C6, and C7 supply the pectoralis major and minor muscles, via the lateral and medial pectoral nerves, as well as the coracobrachialis, brachialis and biceps brachii, via the musculocutaneous nerve. The musculocutaneous nerve provides sensation to the skin of the lateral forearm.
What are the atypical cervical vertebrae?
Of the cervical vertebrae, the atlas (C1), axis (C2) and vertebra prominens (C7) are considered atypical cervical vertebrae. The atlas (C1) lacks a body or spinous process.
How can you tell the cervical vertebrae from the rest of them?
In humans, cervical vertebrae are the smallest of the true vertebrae and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process, through which the vertebral artery, vertebral veins, and inferior cervical ganglion pass.
What is the function of cervical vertebrae?
The cervical spine functions to provide mobility and stability to the head while connecting it to the relatively immobile thoracic spine. The movement of nodding the head takes place predominantly through flexion and extension at the joint between the atlas and the occipital bone, the atlanto-occipital joint.
What does the C6/C7 nerve control?
The C6-C7 Nerve Root This nerve root controls both muscle and skin in the arm via its sensory and motor roots. Some basic actions like stretching the fingers, contracting the triceps, and moving the elbow and wrists are controlled by the C7 motor roots.
What are the symptoms of a pinched nerve at C6?
Pinched nerve signs and symptoms include:
- Numbness or decreased sensation in the area supplied by the nerve.
- Sharp, aching or burning pain, which may radiate outward.
- Tingling, pins and needles sensations (paresthesia)
- Muscle weakness in the affected area.
- Frequent feeling that a foot or hand has “fallen asleep”
What is the name and function of the second cervical vertebra?
The C1 vertebra, also called atlas, is shaped like a ring. The C2 vertebra has an upward-facing long bony process called the dens. The dens forms a joint with the C1 vertebra and facilitates its turning motions, thereby allowing the head to turn in different directions. The atlantoaxial joint.
Which vertebrae are at the very bottom of your spine?
The bottom of the spine is called the sacrum. It is made up of several vertebral bodies usually fused together as one. The remaining small bones or ossicles below the sacrum are also fused together and called the tailbone or coccyx.
What vertebrae is the largest and strongest vertebrae in adult humans?
Lumbar Spine: In your low back, you have 5 vertebrae that are labeled L1 to L5 (the ‘L’ means lumbar). Some people have 6 lumbar vertebrae. These vertebrae are your largest and strongest vertebrae, responsible for carrying a lot of your body’s weight.
What are the three areas of the spine?
The spine has three normal curves: cervical, thoracic and lumbar. There are seven cervical vertebrae in the neck, 12 thoracic vertebrae in the torso and five lumbar vertebrae in the lower back.
Why does my C7 vertebrae hurt?
Injury to the vertebrae and/or intervertebral disc at the C6-C7 level is a common source of C7 radicular nerve pain. In rare cases when the C7 vertebra forms a cervical rib, compression of surrounding blood vessels and/or nerves may occur, resulting in thoracic outlet syndrome.
How are the Atlas and axis cervical vertebrae different?
The atlas and axis have additional features that mark them apart from the other cervical vertebrae. The atlas is the first cervical vertebra and articulates with the occiput of the head and the axis (C2). It differs from the other cervical vertebrae in that it has no vertebral body and no spinous process.
What are the anatomical relationships of cervical vertebrae?
Anatomical Relationships. The transverse foramina of the cervical vertebrae provide a passageway by which the vertebral artery, vein and sympathetic nerves can pass. The only exception to this is C7 – where the vertebral artery passes around the vertebra, instead of through the transverse foramen.
How are c3-c7 vertebrae different from thoracic vertebrae?
C3-C7 Vertebrae, Cervical Discs, Supporting Structures If you compare the thoracic (mid back) and lumbar (low back) vertebrae to the cervical, you’ll see the C3-C7 bones are smaller. The vertebral bodies are round shapes. At the back of the vertebral body are bony arches that project outward to form the facet joints and spinous processes.
How are the ACET joints in the cervical spine determined?
F acet joints determine the type of motion (i.e., the direction of motion) that can occur there. At the upper cervical spine, the plane of the facets is perfectly horizontal in the transverse plane. Descending the cervical spine, the orientation of the facets gradually transition to be more vertical in the frontal plane.