/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 153 In human embryonic development, ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 3: Problem 153

In human embryonic development, which layer develops between the ectoderm and endoderm? (a) Mesothelium (b) Mesoderm (c) Myoderm (d) Myometrium

Short Answer

Expert verified
The correct answer is (b) Mesoderm.

Step by step solution

01

Understand embryo layers

During the early development of an embryo, three layers are formed. These layers are called ectoderm which is the outermost layer, endoderm inside it, and between them, is the mesoderm layer. These three layers further differentiate into various tissue types to form different organs in the body.
02

Compare the options with the known concept

After getting a clear understanding of the embryo layers, compare each option with what you've learned. The first option is Mesothelium, but this is actually a membrane that lines the body's cavities and internal organs. The second option is Mesoderm, which is one of the primary germ layers in the embryo. The third option is Myoderm, but there's no such term in embryonic development. The fourth option is Myometrium, which is a layer of the uterus but is not one of the primary germ layers of an embryo.
03

Choose the correct answer

After comparing the options to the information you have about embryonic layers, you can see that the correct answer is the Mesoderm, which is the layer between the Ectoderm and Endoderm.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Ectoderm
In the world of embryonic development, the ectoderm plays a prominent role as the outermost layer among the three primary germ layers. This layer forms during the early stages of development and serves as an essential component in shaping the body. But what exactly does it give rise to?

As the embryo develops, the ectoderm differentiates into several critical structures:
  • The nervous system, including the brain and spinal cord.
  • The skin, which acts as the body's protective shield.
  • Various sensory organs such as the eyes and ears.
Therefore, whenever you think about the ectoderm, picture it molding the features that allow us to interact with our world. It's fascinating to consider that all these vital components start from this thin, outer layer!
Endoderm
Deep inside the embryonic structure, the endoderm takes its position as the innermost germ layer. This layer's primary role is quite foundational, as it forms the linings of many internal systems. Interestingly, these linings are crucial for various bodily functions.

Here are some key structures that derive from the endoderm:
  • The digestive tract, where it lines organs such as the stomach and intestines.
  • The respiratory system, forming structures like the lungs.
  • Glands such as the liver and pancreas, essential for digestion and metabolism.
Through its development, the endoderm sets up the internal surroundings necessary for our survival. It's incredible how much support this innermost layer provides!
Mesoderm
Sandwiched between the ectoderm and endoderm lies the mesoderm. This layer is quite the multitasker, contributing to the formation of various systems within the body. Its central position allows it to impact both structure and function.

The mesoderm develops into several key parts, including:
  • The skeletal system, forming our bones and connective tissues.
  • The muscular system, allowing for movement and strength.
  • The circulatory system, including the heart and blood vessels.
As you can see, the mesoderm is vital for creating the framework and essentials that keep us moving and thriving. It's amazing how one layer can build such diverse elements of the human body!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The ploidy of spermatogonia, primary spermatocyte, secondary spermatocyte and spermatid is (a) \(2 \mathrm{n}, 2 \mathrm{n}, 2 \mathrm{n}, \mathrm{n}\) (b) \(\mathrm{n}, 2 \mathrm{n}, 2 \mathrm{n}, \mathrm{n}\) (c) \(\mathrm{n}, 2 \mathrm{n}, \mathrm{n}, \mathrm{n}\) (d) \(2 \mathrm{n}, 2 \mathrm{n}, \mathrm{n}, \mathrm{n}\)

The outer layer of blastocyst is known as (a) Zona pellucida (b) Trophoblast (c) Blastomere (d) Corona radiata

The inner cell mass of blastocyst develops into (a) Morula (b) Trophoblast (c) Embryo (d) Zygote

Assertion: Zygote of human contains 46 chromosomes. Reason: Zygote is formed by fusion of haploid cells namely sperm and ovum.

Assertion: Spermatogonia are haploid cells. Reason: Spermatogonia multiply by binary fisision.
See all solutions

Recommended explanations on Biology Textbooks

Control of Gene Expression

Read Explanation

Cell Cycle

Read Explanation

Astrobiological Science

Read Explanation

Energy Transfers

Read Explanation

Ecology

Read Explanation

Ecological Levels

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.