READING : Embryonic And Fetal Development and Ultrasound Imaging

Prenatal development is divided into two primary biological stages. The first is the embryonic stage, which lasts for about two months. At this point, the fetal stage begins. At the beginning of the fetal stage, the risk of miscarriage decreases sharply, and all major structures including the head, brain, hands, feet, and other organs are present, and they continue to grow and develop. When the fetal stage commences, a fetus is typically about 30 mm (1.2 inches) in length, and the heart can be seen beating via ultrasound; the fetus can be seen making various involuntary motions at this stage.
Electrical brain activity is first detected between the 5th and 6th week of gestation, though this is still considered primitive neural activity rather than the beginning of conscious thought, something that develops much later in fetation. Synapses begin forming at 17 weeks, and at about week 28 begin to multiply at a rapid pace which continues until 3 to 4 months after birth.
  

  


 
   
   
One way to observe prenatal development is via ultrasound images. Modern 3D ultrasound images provide greater detail for prenatal diagnosis than the older 2D ultrasound technology. While 3D is popular with parents desiring a prenatal photograph as a keepsake, both 2D and 3D are discouraged by the FDA for non-medical use, but there are no definitive studies linking ultrasound to any adverse medical effects.  The following 3D ultrasound images were taken at different stages of pregnancy:



  


A.    List Of Vocabularies

     Prenatal : sebelum melahirkan
     Biological : biologis, yang berhubungan dengan ilmu hayat atau biologi
     Embryonic : berkenaan dengan janin
     Fetal : yang berhubungan dengan janin
     Fetus : janin
     Gestation : masa kehamilan
     Fertilization : pembuahan
     Medical : yang berhubungan dengan pengobatan

B.    Answer the question from the text above!

1.    Mention the stage of prenatal development! Explain!
2.    What is USG 3D?
3.    When can we detect the brain activity of fetus?

C.    Tenses

• Present future continuous tense

Untuk menyatakan peristiwa, kegiatan atau tindakan yang akan sedang berlangsung di masa datang.
Pola Kalimat :
(+) S+Shall/Will+Be+V1-ing
I will be going home
(-) S+Shall/Will not +Be+V1-ing
I will not be going home
(?) Will/Shall +S+Be+V1-ing
Will you be going home