Human Development By: Brittney Ryan and Madison Carrasca

Basic Information Refers to the biological and psychological development of the human being through out the life span. Consists of development from infancy, childhood, and adolescence to the adulthood. Also known as Developmental Psychology.

Week 1-4 The connections between the mother and the embryo begins. The umbilical cord begins to form. The embryo’s growth centers around the axis, which will become the spine and spinal cord.

Week 5-6 Chemicals produced by the embryo stop the women’s menstrual cycle. Brain activity is shown at the 6 th week. The heart will begin to beat around the same time. Limb buds appear where the arms and legs will appear. Organogenesis begins. The head represents about one half of the embryo’s axial length.

Week 7-8 The embryos blood type becomes apparent. The embryo is capable of motion. The eyes begin to form. Organogenesis and growth continue. At the end of the 8 th week, the embryonic stage is over and the fetal stage begins.

8th Week All major structures are shown, including the hands, feet, head, brain, and other organs are present but they continue to grow and develop. The fetus is about 1.2 inches in length and the heart is beating. The fetus can make general movements and startles that involve the whole body. Some fingerprint motion can be seen.

8-15 Weeks The fetus continues to move in distinct patterns. It also picks up new movements of the arms, legs, and starts to hiccup and breathing-like movements. It also stretches and yawns. At nine weeks the fetus is able to bend its fingers around objects. In response to a touch of a foot, the fetus will bend its legs or curl its toes to move away from the object. The face is well-formed and begins to look more like a human. The different in appearance of the genitals in males and females is shown. A fine layer of hair develops on the head. More muscle tissue and bones have developed.

16-25 Weeks Eyebrows, eyelashes, fingernails, and toenails appear. The nervous system develops enough to control some body functions. The respiratory system has developed. The mother can feel fetus movements at weeks.

26-38 Weeks Fingernails begin to reach the end of the Fingertips. Small breast buds are present on both sexes. Head hair becomes more thicker. The fetus is considered full-term by week 35. The fetus maybe inches in length when born.

Birth to 1 Month (Physical and Language) Feedings: 5-8 per day Sleep: 20 hours per day Sensory Capacities: makes basic distinctions in vision, hearing, smelling, tasting, touch, temperature, and perception of pain

2-3 Months (Physical and Language) Sensory Capacities: color perception, visual exploration, oral exploration. Sounds: cries, coos, grunts Motor Ability: control of eye muscles, lifts head when on stomach.

4-6 Months (Physical and Language) Sensory Capacities: localizes sounds Sounds: babbling, makes most vowels and about half of the consonants Feedings: 3-5 per day Motor Ability: control of head and arm movements, purposive grasping, rolls over.

7-9 Months (Physical and Language) Motor Ability: control of trunk and hands, sits without support, crawls about.

10-12 Months (Physical and Language) Motor Ability: control of legs and feet, stands, creeps, apposition of thumb and force-finger. Language: says one or two words, imitates sounds, responds to simple commands. Feeding: 3 meals, 2 snacks Sleep: 12 hours, 2 naps

1-1 ½ Years (Physical and Language) Motor Ability: Creeps upstairs and walks (10-20 min) Can draw lines on paper with crayons

1 ½- 2 Years (Physical and Language) Motor Ability: Runs, kicks a ball, builds six cube towers, capable of bowel and bladder control Language: Vocabulary of more than 200 words Sleep: 12 hours at night, 1-2 hour naps

2-3 Years (Physical and Language) Motor Ability: Jumps off of steps, rides a tricycle, uses crayons, and builds a 9-10 cube tower Language: Starts to use short sentences, controls and explores the world with language, stuttering may appear briefly

3-4 Years (Physical and Language) Motor Ability: Stands on 1 leg, jumps up and down, draws and circle and cross, and self sufficient in many routines in home life

4-5 Years (Physical and Language) Motor Ability: Mature motor control, skips, broad jumps, dresses his or her self, copies a square and triangle Language: Talks clearly, uses adult speech sound, has mastered basic grammar, relates a story, and knows over 2,000 words

Sources developmenthttp://en.wikipedia.org/wiki/Psychosexual_ development ent/normaldevelopment.shtmlhttp://childdevelopmentinfo.com/developm ent/normaldevelopment.shtml