![]() ![]() Muscle attachment sites on the cervical vertebrae provide movement and posture to the head and neck. Hollow spaces within the cervical vertebrae protect and conduct the spinal cord and vertebral arteries through the neck. 16K 987K views 3 years ago Nursing Lecture Videos The human skull bones can be tricky to learn at first in your anatomy and physiology class, but these mnemonics will help you learn the 8. The second vertebra (axis) allows the head to rotate laterally to the left and the right. The first cervical vertebra (atlas) supports and balances the head. human skeleton - Human skeleton - Axial, Visceral, Bones: The craniumthe part of the skull that encloses the brainis sometimes called the braincase, but its intimate relation to the sense organs for sight, sound, smell, and taste and to other structures makes such a designation somewhat misleading. The 7 cervical vertebrae form the bones of the neck that support the skull and organs of the head. They form a bridge connecting the eardrum to the inner ear and function to transmit vibrations between these parts. The auditory ossicles (malleus, incus, and stapes) of each ear are also bones in the head separate from the skull. Bone marrow makes blood cells more specifically, red marrow makes blood and yellow marrow stores fat. Our bones are in axial (skull, ribcage, spine) and appendicular (arms, legs) groups. ![]() Bugs have exoskeletons outside their bodies, while humans have endoskeletons inside. The bones are listed in Table, but note that only six types of cranial bones and eight types of. Skeletons support and protect our bodies. It anchors muscles of the tongue and throat and holds open the larynx of the respiratory tract. The skull consists of 8 cranial bones and 14 facial bones. The hyoid is closely associated with the skull but is a “floating bone” that does not form a joint with any other bone. The upper portions of the digestive and respiratory tracts are also housed within the hollow oral and nasal cavities of the skull.Īnother important bone of the head and neck is the hyoid bone. Teeth are rooted into deep sockets in the mandible and maxillary bones. Discussed in this article as part of the axial skeleton is a third subdivision, the visceral, comprising the lower. The skull encases and protects the brain as well as the special sense organs of vision, hearing, balance, taste and smell.Īttachment points for the muscles of the head and neck are located on the exterior surfaces of the skull and allow for important movement like chewing, speech, and facial expressions. These are (1) the axial, comprising the vertebral column the spineand much of the skull, and (2) the appendicular, to which the pelvic (hip) and pectoral (shoulder) girdles and the bones and cartilages of the limbs belong. ![]() The skull consists of 22 cranial and facial bones, which, with the exception of the mandible, are tightly fused together. Movements of these bones by the attached muscles of the head provide for facial expressions, eating, speech, and head movement. The bones of the head and neck play the vital role of supporting the brain, sensory organs, nerves, and blood vessels of the head and protecting these structures from mechanical damage. ![]()
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