Jacob is 6.25 months (25 weeks)

The structures of the spine begin to form -- joints, ligaments and rings. These will protect the all important spinal cord which serves as the information transmitter for your child's body.

Blood vessels of the lungs develop.

Your baby's nostrils begin to open. There is a study out of Belfast that suggests babies at this stage have the capability of scent preferences!

The nerves around the mouth and lip area are showing more sensitivity now. When baby is rooting for food later on, these will be valuable!

His swallowing reflexes are developing.

Dexterity is improving. Your baby can make a fist and would clasp objects placed in palm.

Your child has now obtained an approximate length of 13.6 inches and weighs 1.46 pound.