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相关概念视频

Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

2.1K
The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
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Sutures of the Skull01:22

Sutures of the Skull

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The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
6.4K
Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

2.1K
The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
2.1K
Overview of the Skull01:08

Overview of the Skull

4.4K
The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
4.4K
Classification of Bones01:18

Classification of Bones

5.2K
The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The...
5.2K
Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

5.7K
Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into ...
5.7K

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相关实验视频

Updated: Jun 14, 2025

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
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Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans

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正常头脑和头脑 Sagittal Craniosynostosis 之间的形态差异

Alexander Velazquez1, Michael S Lebhar2, Johnny Yang1

  • 1From the University of Mississippi School of Medicine.

Plastic and reconstructive surgery
|September 5, 2024
PubMed
概括

射手同位症呈现出明显的头部形状. 这项研究揭示了大脑和大脑常态患者之间的显著测差异,表明每个组的独特形状特征.

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科学领域:

  • 面外科手术 面外科手术
  • 儿科神经外科 儿科神经外科
  • 医疗成像医学成像

背景情况:

  • 非综合性单的斜头骨突可表现为头骨形或头骨形的形状.
  • 之前的研究还没有完全阐明这两种表现之间的明显的形差异.

研究的目的:

  • 为了研究和比较脑测量变异的 scaphocephalic 和 normocephalic 患者与沙吉塔 synostosis.
  • 确定区分这两组患者的特定形态差异,并将其与对照组进行比较.

主要方法:

  • 分析了40名患有沙吉塔突症的患者头部计算机断层扫描 (CT) 扫描 (20个脑,20个脑) 和年龄/性别匹配的对照组.
  • 测量包括底角,距离中线的距离和内体积.

主要成果:

  • 与对照组相比,这两组患者的头骨指数显著下降.
  • 在患者组和对照组之间的外部声学介质和双额角中观察到明显的角度差异.
  • 从中线开始的头骨底部测量有所不同,患者的内声介质距离较长,患者的euryon-to-zygomaticofrontal suture距离较短.
  • 内体积的分布有所不同:与对照组相比,内体积的分布在脑脊患者的前部和脑脊患者的后部不同.

结论:

  • 患有大脑和正常大脑 Sagittal Synostosis 的患者表现出显著的,明显的头骨测量差异.
  • 在底线性和角度测量的右向不对称性存在于两组患者中.
  • 这些发现提供了形测量证据,支持形状的个性化 scaphocephalic 和 normocephalic 呈现的形同位症.