Answer the following questions from your knowledge of early human development in the womb - Leaving Cert Biology - Question 14 - 2012
Question 14
Answer the following questions from your knowledge of early human development in the womb.
(i) 1. Name the three germ layers in the early human embryo.
2. For each ... show full transcript
Worked Solution & Example Answer:Answer the following questions from your knowledge of early human development in the womb - Leaving Cert Biology - Question 14 - 2012
Step 1
1. Name the three germ layers in the early human embryo.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The three germ layers in the early human embryo are:
Ectoderm
Mesoderm
Endoderm
Step 2
2. For each germ layer name a structure in the adult body that develops from it.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The structures that develop from each of the germ layers are:
Ectoderm: develops into the nervous system.
Mesoderm: develops into the skeletal system.
Endoderm: develops into the digestive system.
Step 3
From which tissues does the placenta develop?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The placenta develops from embryonic tissues specifically from the uterine lining or endometrium.
Step 4
1. What is the amnion?
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The amnion is a membrane (or sac) that surrounds the embryo (or foetus).
Step 5
2. Explain the importance of the amnion for the foetus.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The amnion contains (or secretes) amniotic fluid, which protects the embryo by cushioning it from shocks and helps maintain a stable temperature.
Join the Leaving Cert students using SimpleStudy...
