Subject: Embryology and Animal Histology

Scientific Area:



65 Hours

Number of ECTS:




Overall objectives:

1 - Identify the various stages of egg development in protostomes and deuterostomes.
2 - Identify the various stages of embryonic development in echinoderms, amphibians, birds and mammals.
3 - Knowing the phenomenon of embryogenesis of organs and systems as well as the relations with its histology.
4 - Knowing the morphological characteristics of the various tissues and their interrelationships in the structures present in different organs and systems in particular in mammals.
5 - Recognize the most common histopathological changes in the various tissues and organs.
6 - Mastering the practice of histological preparation of tissues to obtain histological slides.
7 - Know and identify various types of microtome and their functions. Know the various types of dyes (acidic, basic and vital well as Romanowsky) in use in histology


1 - Obtaining the sample and tissue preparation for cutting under the microtome; various types of microtome.
2 - Acidic, basic and vital dyes. Romanowsky dyes.
3 - The types of eggs. The segmentation and embryonic development in some animals and in humans.
4 - Tissue differentiation and its causes. Epithelial tissue. Specialized tissues and unspecialized connective tissue; adipose, cartilaginous and bone tissue. Blood and lymphatic tissue. The muscle and nervous tissues. Placenta and umbilical cord.
5 - Embryogenesis and development of the cardiovascular system, body cavities, upper and lower limbs; osteogenesis. Blood cells and their differentiation.
6 - Embryogenesis and histology of integumentary system, skeletal, muscular, nervous, respiratory, digestive, cardiovascular and lymphatic, urinary, male and female reproductive, endocrine organs and organs of senses.
7 - Changes in embryonic development due to the action of genes; notions of Teratology.


Michael H. Ross, Gordon I. Kaye & Wojciech Pawlina , 2002 , Histology a Text and Atlas , Lippincott Williams & Wilkins
P. R. Wheater, H. G. Burkitt & V. G. Daniels , 1987 , Functional Histology, A Text and color Atlas , Churchill Livingstone
UCPel , 2009 , Atlas de Histologia Médica ,
Allen L. Bell , 1999 , Human Histology , University of New England,
Ronald W Dudek , 2001 , High Yield Embryology , Lippincott Williams & Wilkins , Atlas of Human Embryology ,
N.A. , 2011 , UNSW Embryology, An educational resource for learning concepts in embryological development, Version 9.0 , The University of New South Wales, Sydney, Australia , 2012 , Embryology , University of Fribourg, Lausanne and Bern (Switzerland)

Assesssment methods and criteria:

Classification Type: Quantitativa (0-20)

Evaluation Methodology:
Lectures in a expositive manner. Occasionally groups of students investigate a topic and pass a presentation previously worked out with the teacher. Students are encouraged to make use of materials from the web. Laboratory practices consist in observing slides under the microscope, drawing and labeling of structures. Lab evaluations consist in the observation of 10 blades for which it is required to identify the structure of tissues and particular features of the tissues. A complete legend is also mandatory. Each student has 7 minutes to make the evaluation of each blade. Continuous assessment: T and PL components are spread over 2 times of independent review and subject to appeal. Each T and PL are worth 30% of final grade. PL= 20%. Minimum score in each fraction of 9.5.