San Ignacio de Recalde School Subject: Science

By Lic. Isabel Janeth Del Rosario López Mejía

BLOGS: http://sciencejl.blogspot.com/http://englishisfun-janeth.blogspo

t.com/

How does life begin?

By Lic. Janeth López

Topic: From Cells to Human Body

By the end of the lesson you will be able to: identify the levels of organization in human

organism. analyze the embryonic source of all cells of the

body. know the vocabulary related to “from Cells to

Human Body”.

Outcome:

Molecule

Cell

Nervous

tissue

Organ

organ system

Organism-

Human

By Lic. Janeth López

Levels of organization

The structural, functional and biological unit of allorganisms.

group of biological cells that perform a similar function.

an electrically neutral group of two or more atoms held together by chemical bonds.

Collection of tissues joined that performs a specific function.

A group of organs that work together to carry out a particular task.

a living form with functions.

Humans are collections of specialized cells that work together.

These cells allow you to do everything from lifting a glass, to learning people’s names, to maintaining your body temperature on a cold day.

These cells arise from a single cell, The zygote, which is formed by the union of an egg and sperm. The zygote divides and differentiates into more than 260 different types of human cells.

The Primary Germ Layers

By Lic. Janeth López

The Three Primary Germ Layers

The ectoderm (outside layer) the mesoderm. middle layerthe endoderm(inside

layer of the embryo (until about eight weeks

after fertilization) in its gastrula stage).The embryonic

source of all cells of the body, which comprise the many kinds of specialized cells are in place at the end of gastrulation.

The Three Primary Germ Layers

Thymus, parathyroidProstate. liver The epithelial lining of

the: urinary bladder and

urethra gastrointestinal and

respiratory tracks Tympanic cavity,

tympanic atrium and auditory tube.

The parenchyma of the tonsils.

• the central nervous system (the brain and spinal cord);

• the sensory epithelia of the eye, ear, and nose;

• the epidermis (the nails and hair);

• the mammary glands; • the hypophysis; • the subcutaneous glands; and• the enamel of the teeth

Enamel=esmalteLining=revestimiento

• connective tissue• striated and smooth muscles;• the gonads (ovaries and

testes) and genital ducts;• the serous membranes lining

the body cavities;• the spleen

Spleen=vasoLimb=miembro

By Lic. Janeth López

The Three Primary Germ Layers

True or False or a),b), c) or d) ?

By Lic. Janeth López

Topic: From Cells to Human Body

1. The lung develops from the endoderm.

2. Bone is formed by the endoderm. 3. Which of the following is not derived from the mesoderm  a) Muscle (b) Cartilage (c) Bone (d) Brain4. Heart is derived from: (a) Ectoderm (b) Mesoderm  (c) Endoderm (d) It's a special part of the placenta5. Which of the following is NOT formed by the ectoderm? a) Nervous tissue b) Epidermis  (c Dental enamel (d the gonads

HOMEWORK

Research Information

Make a list of the cells that are derived primarily from endoderm, mesoderm and ectoderm.

Don’t forget to paste or draw images in your notebook.

Analyze

How would you describe the relation ship between different jobs, divisions, and levels of responsibility in a company?

Bibliography:Basic Bibliography• De Salle, Rob; Heithaus, Michael(2008). Holt Biology. United States of America. Holt, Rinehart and Winston.

http://vihmh.impelsys.com/hmd_biology/index.php

.Electronic Bibliography• About.com( 2014) Biology [on line]. Available at: ttp://biology.about.com/od/anatomy/a/aa072007a.htm March 11th 2014].Video:http://www.youtube.com/watch?v=HBIYwiktPsQI hope these link

help you to learn more in terms of

science.

By Lic. Janeth López

By Lic. Janeth López

Contact

You can contact me at:

Blog: http://englishisfun-janeth.blogspot.com/

By Lic. Janeth López