head

adult head

The head is the anterior-most division of the body [GO].

类型 Organ
上级结构 subdivision of organism along main body axis
拉丁名称 adult head
FMA ID 7154

下级结构

panarthropod head Organ embryonic head Organ insect larval head Organ

常见问题

What structures are contained within the vertebrate head?
The vertebrate head contains the brain and brainstem (protected by the cranial vault), cranial nerves (12 pairs in humans), major sense organs (eyes, ears, nose, tongue), the jaw apparatus for feeding, teeth, major blood vessels (carotid arteries, jugular veins), and in many species, the trachea and esophageal openings.
How is the head distinguished from the neck anatomically?
The head is demarcated from the neck at the base of the skull (craniocervical junction), where the foramen magnum allows the brainstem to continue as the spinal cord. The atlas (C1) and axis (C2) vertebrae support the head and enable its rotational movements.
What is the evolutionary significance of cephalization?
Cephalization is the evolutionary tendency for nervous tissue, sensory organs, and feeding apparatus to concentrate in an anterior head region. This improves coordination of the body's leading end — the first part to encounter the environment — providing evolutionary advantages in prey detection, predator avoidance, and feeding efficiency.

相关结构

mucus body coating mucous body coating mucus cocoon mucous cocoon Mullerian duct ductus paramesonephricus multi cell part structure cell part cluster multicellular anatomical structure multicellular structure multilaminar epithelium laminated epithelium multi-tissue structure multi-tissue structures multi-unit eye

医学免责声明

本内容仅供教育和信息目的。不打算作为专业医疗建议、诊断或治疗的替代品。对于您可能对某种医疗状况有的任何问题，请始终寻求医生或其他合格医疗提供者的建议。切勿因在本网站上阅读的内容而忽视专业医疗建议或延迟寻求建议。

Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.