"Structural Hierarchy of Animal Bodies" How cells constitute living organisms PPT courseware 4

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"Structural Hierarchy of Animal Bodies" How cells constitute living organisms PPT courseware 4

Cell Differentiation

Later, most cells lose the ability to divide. During development, they undergo differential changes in morphology, structure and physiological function. This process is called cell differentiation.

cells differentiate into tissues

Concept: A group of cells formed by cells with similar shapes, structures, and functions united together is called a tissue.

1. Epithelial tissue

Distribution: Distributed on the body surface and lumen or gland surface

Features: Cells are tightly arranged and there is little intercellular substance

Function: protection, secretion, etc.

(2) Connective tissue

Distribution: Widely distributed.

Features: Large intercellular spaces

Function: Support, protection, connection, nutrition.

2. Tissues further form organs

Organ concept: A structure composed of different tissues that are combined in a certain order and perform certain functions is called an organ.

What are the following organs made of?

Nervous tissue + connective tissue

epithelial tissue, nervous tissue

connective tissue, muscle tissue

3. Organ system and human body

What is the function of the stomach? Can only the stomach complete digestion?

What other structures complete the digestive function together with it?

Oral cavity, pharynx, esophagus, stomach, intestines...

Liver, salivary glands…

System: Multiple organs that can complete one or several physiological functions are combined in a certain order to form a system.

Do you know how many major systems our human body has? Tell us about their composition and functions?

Motor system, digestive system, circulatory system, respiratory system, nervous system, urinary system, reproductive system, endocrine system

Feedback after class

1. The starting point of growth and development of animals and humans is ( )

A. Egg cell B. Somatic cell C. Fertilized egg D. Sperm

2. The following are several ways to express the basic structural levels of the human body, among which the correct one is ( )

A. Tissue cells organ systems human body

B. Cells, organs, tissues, human body systems

C. Cells, tissues, organs, systems, human body

D. Organs, tissues, cells, systems, human body

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For more information about the PPT courseware "How cells constitute the structural hierarchy of living organisms and animal bodies", please click the "How cells constitute living organisms ppt Structural hierarchy of animal bodies" ppt tag.

"Structural Levels of Animal Bodies" How cells constitute living organisms PPT courseware 6:

"Structural Levels of Animal Bodies" How Cells Constitute Organisms PPT Courseware 6 Question: The growth of animals and human bodies starts from one cell. What kind of cell is it? What changes does it undergo to become multiple cells? The cells formed by the division of the fertilized egg are only spherical...

"Structural Levels of Animal Bodies" How cells constitute living organisms PPT courseware 5:

"Structural Levels of Animal Bodies" How cells constitute living organisms PPT courseware 5 Think about it. The growth of flatfish starts with one cell. What kind of cell is it? What changes did this cell undergo to become a flatfish (cell group)? Cell Differentiation:..

"Structural Levels of Animal Bodies" How cells constitute living organisms PPT courseware 3:

"Structural Levels of Animal Bodies" How Cells Constitute Organisms PPT Courseware 3 [Autonomous Learning] 1. The development of animals and human bodies starts with one cell, that is, _____, and this cell is continuously formed by ____ and _____ ____. Different organizations further formed ____. ..

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Update Time: 2024-10-02

This template belongs to biology courseware People's Education Edition seventh grade biology volume 1 industry PPT template

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