骨骼的骨骼分为几类,包括扁平骨头。其他骨骼类型包括:
- long bones
- 短骨头
- 不规则的骨头
- 芝麻骨
扁平的骨头薄而平坦。有时它们有轻微的曲线。扁平骨头是肌肉或内部器官保护的依恋点。
继续阅读以了解有关特定平坦骨骼及其结构的更多信息。
头骨的扁平骨头
你的骨头skull包围和保护您的大脑,还为您的脸提供支持。您的头骨的许多骨头都是平坦的骨头。这些包括:
- 额骨。该骨头形成您的额头和眼窝的上部。
- 顶骨。您的头部两侧都有两个顶骨。它们形成了您头骨的顶部和侧面。
- 枕骨。This bone forms theback of your skull。It has an opening near the bottom that allows your spinal cord to meet your brain.
- Nasal bones.You have twonasal bonesthat form the bridge of your nose. They form the bridge of your nose.
- Lacrimal bones.你也有两个小lacrimal bonesthat form part of your eye socket.
- 呕吐骨。This bone forms your nasal septum, the space between your nostrils.
Sternum and ribs
您的胸骨是位于胸部中间的T形扁平骨头。它可以保护您heartandlungs。
您的肋骨也是平坦的骨头。您的身体两侧都有12个。它们在上躯干的器官周围形成一个cagelike的保护结构。
您的所有十二根肋骨都连接到背面的脊柱。此外,您的前七根肋骨直接固定在前面的胸骨上。接下来的三个肋骨通过软骨链接到您的胸骨。最后两个肋骨没有连接在前面,有时被称为浮肋骨。
肩cap
您的肩capis a flat bone that’s commonly referred to as your shoulder blade. You have two of these triangle-shaped bones in your upper back. The muscles that allow your arms to rotate attach to your scapula.
您的肩capalso joins together with yourcollar boneand肱骨in your upper arm to make your shoulder joint.
Coxal bone
您的Coxal骨骼是一个大而平坦的骨头,形成了您的pelvis。它实际上是由三个骨头组成的:
- Ilium.This is the widest part, located near the骨盆顶。
- Pubis.这是骨盆中最远的一部分。
- 坐姿。This forms the bottom of your pelvis.
您的femur bonesin your upper legs attach to your coxal bone to form your hip joint. It also provides an attachment point for several muscles, including yourgluteal muscles。
平骨的结构与其他骨骼(例如长骨)的结构有所不同。平坦的不同结构层包括:
- 骨膜。This is the outer surface of the bone. It contains blood vessels and nerves that help provide nutrients to the bone.
- 密质骨。This is the layer of bone below the periosteum. It’s a very hard, dense type of bone tissue.
- 海绵骨。这是最内向的一层。它轻巧,有助于吸收突然的压力,例如对头部的打击。
此外,头骨中的扁平骨头具有独特的结构特征。他们在名为缝合线的独特关节上相遇。与您的其他关节不同,缝合线无法移动。它们直到您的成长完成(通常在20岁左右)之前才完全融合在一起。这使您的大脑能够成长和扩展为婴儿和孩子。
Flat bones are a type of bone in your body. They’re typically thin, flattened, and slightly curved. Flat bones serve to either protect your internal organs or to provide a connection point for your muscles.