These plates increase the length of your bones through proliferation of ossifying cells we call chondrocytes.

些骨骺板通过骨化细胞增殖增加骨骼长度，我们称之为软骨细胞。

Eventually osteoblasts get activated and a process called ossification will start, which is when the fibrous tissue turns to bone.

最后成骨细胞活化，骨化过程启动，纤维组织最终转化为骨组织。

Calcitriol increases renal tubular reabsorption of calcium which reduces the loss of calcium in the urine.

骨化三醇可以增加肾小管对钙重吸收，减少尿钙。

Many of the sharks, do get bony cartilage vertebrae which do in fact fossilize which is contrary to common belief.

很多鲨鱼确会有能够形成化石骨化硬质脊椎，跟一般人所认为相反。

It’s said to be completely ossified, meaning that it’s fully hardened bone.

是完骨化， 味着是完硬化骨头。

Diseases like osteosclerosis freeze the tiny bones in the ear so they no longer vibrate.

诸如骨化性迷路炎之类疾病会使耳内小骨硬化，导致们无法再振动。

PTH is produced in the parathyroid gland, while calcitriol is made in the kidney.

甲状旁腺产生甲状旁腺激素，肾脏产生骨化三醇。

And all of the cats that have a completely ossified hyoid can purr, but don’t roar.

所有舌骨完骨化猫都可以发出咕噜声， 但不会吼叫。

I also made my own bed out of the ossified skin leather of a lesser race.

我还用一个较低等种族骨化皮肤皮革，自己做了一张床。

Because you don't need a fully ossified skeleton if you spend most of your time in the water.

因为你大部分时间都在水里，所以你不需要一个完骨化骨骼。

The amount of calcium and circulation is mainly regulated by two hormones parathyroid hormone(PTH) and calcitriol.

钙含量和循环主要受甲状旁腺激素（PTH）和骨化三醇两种激素调节。

In this process, collagen gets destroyed and replaced by fibrin, and ultimately ossification sets in, forming a " bamboo spine" on Xray or CT-scan.

在该病中，胶原被损毁并被纤维蛋白取代，最终骨化，在X线摄片或CT中脊椎呈“竹节样”改变。

25-hydroxy-vitamin D then travels to the kidneys, where the enzyme 1-alpha-hydroxylase converts it to 1,25 hydroxy-vitamin D, or calcitriol, which is the active form of vitamin D.

之后25-羟维生素D被运送至肾脏，在1-α-羟化酶作用下被转化为1，25-二羟维生素D，即骨化三醇，是维生素D活性形式。

The cats that do roar don’t have a fully ossified hyoid, meaning that it hasn’t fully hardened into bone, so it’s a lot more flexible.

会吼叫猫没有完骨化舌骨， 味着还没有完硬化成骨头，所以要灵活得多。

At the same time, it stimulates production of calcitriol which promotes absorption of calcium in the small intestine, while also increases reabsorption in the kidney.

同时，刺激骨化三醇产生，促进小肠对钙吸收，同时也增加肾脏重吸收。

An X-Ray and CT often show a bamboo spine, which is caused by the ossification of the annulus fibrosus on the outside of a straightened spine, giving it a hollow appearance!

X线摄片和CT通常可见“竹节样”改变；变直脊柱外缘纤维环骨化导致脊柱看起来像是空心一样！

It can be congenital, meaning that the person is born with it, or acquired, usually due to degenerative disorders like ankylosing spondylitis, where the bones remodel causing intervertebral discs ossification, and the narrowing of the spinal canal.

可能是先天性，也就是患者出生便有种情况；或是获得性，通常原因是退行性疾病，如强直性脊柱炎，导致骨重塑，引起椎间盘骨化，进而造成椎管狭窄。

The parathyroid hormone gets the bones to release calcium, and gets the kidneys to reabsorb more calcium so it's not lost in the urine as well as synthesize calcitriol also known as 1,25-dihydroxycholecalciferol also known as active vitamin D.

甲状旁腺激素作用于骨骼使其释放钙离子，也作用于肾脏而增加钙重吸收，样钙就不会随尿液排出；以及用于合成骨化三醇，也称为1，25-二羟基胆钙化固醇，又叫活性维生素D。