Spinal branches, pass into the vertebral canal via the intervertebral foramina and contribute to supply not only of the vertebral bodies and extradural content of the canal, but also of the dura and spinal cord, reinforcing the anterior and posterior spinal arteries.
Your baby will be able to see pretty clearly by the time he's 12 months old, but his vision won't be fully developed until he's between 3 and 5 years old. A baby's vision improves dramatically over the first year. At birth an infant can detect light and motion, then can make out faces and large shapes. By the end of the first month, a baby can make eye contact and focus on objects about 12 inches away. By the time a baby is 3 to 4 months old, he can distinguish between colors and focus on smaller objects.
Vision is the last sense to develop in your unborn baby. This is because for about the first 26 weeks of your pregnancy, your babyâs eyelids remain closed for the retinas to fully develop. Around week 26, your babyâs tiny eyelids open and even begin to blink!At 6 months babies can distinguish light in the womb. The entire body with the exception of the top of the head by 32 weeks gestational age. Your baby uses this newfound sense of touch to explores his/her environment in the womb by stroking his or her face, sucking on a thumb, touching the rest of his/her body, touching the uterine wall and the umbilical cord.