À propos de ce cours
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Lactation and especially milk, which is the product of that unique mammalian process, are routinely encountered within our daily lives. Nevertheless, they often are poorly understood by many, even including many who are engaged in the business of producing milk. The overall course goal is to introduce fundamental concepts that form the basis for understanding the biology of lactation, the biology of the mammary gland, and the products of that important physiological process. As a learner in this course, you will be provided with a series of easily understood presentations that collectively will help you build a foundation for greater understanding of lactation. You will be able to engage with other learners so that you can extend your learning beyond the video presentations. Ultimately, you will be able to construct your own mental model for understanding the wide range of topics that relate to the biology of lactation. Upon completion of the course, you will be prepared to expand your knowledge and understanding of lactation from other sources and experiences as you pursue your individual interests. Before you start the course, I suggest that you identify a question or several questions about lactation that you already have on your mind. This could be from your own experiences, something you read about or saw, or something you have wondered about. Write down your question(s) and use that to help you decide how to engage with the content of this course. You might engage with the modules in the order they are presented, or start with a module that is of particular interest to you, or pick and choose modules in any order. I encourage you to engage in all of the types of learning activities that this course has to offer, including but not limited to, the discussion forums, quizzes, peer-review assignments, and concept maps and other learning aids....
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Approx. 32 hours to complete

Recommandé : 8 weeks of study; 4–5 hours/week...
Comment Dots

English

Sous-titres : English...
Globe

Cours en ligne à 100 %

Commencez dès maintenant et apprenez aux horaires qui vous conviennent.
Calendar

Dates limites flexibles

Réinitialisez les dates limites selon votre disponibilité.
Beginner Level

Niveau débutant

Clock

Approx. 32 hours to complete

Recommandé : 8 weeks of study; 4–5 hours/week...
Comment Dots

English

Sous-titres : English...

Programme du cours : ce que vous apprendrez dans ce cours

Week
1
Clock
1 heure pour terminer

Course Orientation

The series of videos and readings provided here are aimed at introducing this course in Lactation Biology. Course organization is described. Requirements for participation in the course are summarized. And, opportunities for learners to engage in the course content, as well as with each other, are indicated. ...
Reading
2 vidéos (Total 10 min), 5 lectures, 2 quiz
Video2 vidéos
Lactation Word Cloud2 min
Reading5 lectures
Course Syllabus10 min
About the Discussion Forums1 min
Social Media5 min
Updating Your Profile5 min
Study Aid Activities Overview5 min
Quiz2 exercices pour s'entraîner
Orientation Quiz5 min
Demographics Survey26 min
Clock
1 heure pour terminer

Module 1: Introduction to Lactation Biology

In this module, we will introduce some basic definitions of terms related to the biology of lactation, provide an overview of milk, and briefly introduce the phylogenetic organization and evolution of mammals. Learning the definitions will be important for establishing a baseline vocabulary that will help reduce confusion about topics presented in subsequent videos. Milk, a primary product of the lactation process, will be introduced in an effort to provide a foundation for later modules in which milk and milk composition are explored in greater depth. The series of videos about mammals collectively offer a brief overview of the wide spectrum of these animal species, as well as some thoughts on how lactation came to be an integral part of the reproductive strategy of those species....
Reading
8 vidéos (Total 58 min), 2 lectures, 2 quiz
Video8 vidéos
Definitions Part 27 min
An Overview of Milk5 min
How Much Milk?4 min
Milk Products6 min
Mammals10 min
Mammalian Evolution5 min
Why Lactate?9 min
Reading2 lectures
Module 1 Overview5 min
Optional: Study Aids5 min
Quiz2 exercices pour s'entraîner
Lesson 1-1 Quiz10 min
Lesson 1-3 Quiz10 min
Clock
4 heures pour terminer

Module 2: Mammary Gland Structure

One of the most fundamental requirements for understanding any aspect of biology is to appreciate the relationships that exist between form and function, or anatomy and physiology. In the case of lactation and the mammary gland, it is important to be able to visualize the various levels of mammary gland structure in order to understand how the mammary gland grows and functions. This module presents an overview of mammary gland anatomy and macrostructure using the dairy cow as our primary example. In addition, the tissue, cellular, and subcellular levels of mammary structure are presented. The module provides a conceptual foundation that will allow you to individually explore mammary gland anatomy and microstructure in other mammalian species. ...
Reading
19 vidéos (Total 130 min), 2 lectures, 5 quiz
Video19 vidéos
Mammary Lobes6 min
Simple vs Complex Glands4 min
Mammary Anatomy at the Cow Side10 min
Mammary Suspensory System9 min
Median Suspensory Ligament2 min
Structure of Teats and Cisterns6 min
Supernumerary Teats4 min
Mammary Blood System10 min
Mammary Lymph System6 min
Mammary Nervous System3 min
Introduction to Mammary Microstructure6 min
Microstructure - 2D and 3D8 min
Lobules5 min
More on Lobules9 min
Alveoli and Their Environment7 min
Myoepithelial Cells5 min
Mammary Cell Ultrastructure Part 18 min
Mammary Cell Ultrastructure Part 25 min
Reading2 lectures
Module 2 Overview5 min
Optional: Study Aids5 min
Quiz5 exercices pour s'entraîner
Lesson 2-1 Quiz10 min
Lesson 2-2 Quiz12 min
Lesson 2-3 Quiz10 min
Lesson 2-4 Quiz10 min
Week 1 Quiz30 min
Week
2
Clock
5 heures pour terminer

Module 3: Milk Composition

Milk is the product of the lactation process. Such a simple statement does not come close to doing justice to the complex nature of this biological fluid. In this module, we explore the major components of milk, as well as provide a basis for understanding milk as a product that we purchase in a store. Mechanisms of synthesis of milk components are introduced. And, several videos include discussions of the nature of differences in milk composition among mammalian species, including comparisons of cow milk with human milk....
Reading
27 vidéos (Total 178 min), 2 lectures, 7 quiz
Video27 vidéos
Milk Components Demo2 min
Perspectives on Milk Composition7 min
Milk Under the Microscope5 min
Major Milk Fractions5 min
From Cow to Store10 min
Total Solids4 min
Lactose7 min
Lactose Intolerance4 min
Lactose Synthesis8 min
Milk Protein4 min
Casein8 min
Casein Demo5 min
Whey Proteins9 min
Milk Protein Synthesis8 min
Milk Fat4 min
Fatty Acids6 min
Milk Fat - Species Comparisons5 min
Milk Fat Synthesis15 min
Milk Minerals10 min
Milk Vitamins2 min
Cells in Milk6 min
More on Milk Cells1 min
Milk Bioactive Factors8 min
Species Comparisons of Milk7 min
Cow vs. Human Milk Composition5 min
Wrapping Up Milk Composition4 min
Reading2 lectures
Module 3 Overview5 min
Optional: Study Aid5 min
Quiz7 exercices pour s'entraîner
Lesson 3-1 Quiz10 min
Lesson 3-2 Quiz10 min
Lesson 3-3 Quiz10 min
Lesson 3-4 Quiz10 min
Lesson 3-5 Quiz10 min
Lesson 3-6 Quiz10 min
Week 2 Quiz30 min
Week
3
Clock
3 heures pour terminer

Module 4: Mammary Gland Development

The tissue that we know of as the mammary gland (or udder or breast) may appear as relatively uncomplicated compared with some internal organs such as the heart or brain. The gland is outside the body wall, has a nipple or teat in most species, and has a series of ducts by which milk that is produced in microscopic blind tubes can be expressed from the gland. How can such a gland develop and what regulates that development? It turns out that the initial stage of development occurs extremely early in the fetal development of the animal. It then proceeds through a series of developmental phases, many of which are closely linked with the reproductive functioning of the animal, and eventually leading to the time when the gland is producing milk. Furthermore, the mammary gland is one of a few tissues that undergoes repeated cycles of development, functioning, regression, and redevelopment, again associated with the reproductive cycles of the animal. This module describes the various stages of mammary development and provides the framework for understanding how these stages relate to each other, as well as to the functionality of the gland....
Reading
11 vidéos (Total 79 min), 2 lectures, 4 quiz
Video11 vidéos
Fetal Stage - 26 min
Fetal Stage - 36 min
Prepubertal Stage - 17 min
Prepubertal Stage - 23 min
Postpubertal Stage7 min
Development During Pregnancy - 12 min
Development During Pregnancy - 26 min
Development During Pregnancy - 35 min
Lactation7 min
Bovine Mammary Development13 min
Reading2 lectures
Module 4 Overview5 min
Optional: Study Aid5 min
Quiz4 exercices pour s'entraîner
Lesson 4-1 Quiz10 min
Lesson 4-2 Quiz10 min
Lesson 4-3 Quiz10 min
Week 3 Quiz30 min
Week
4
Clock
5 heures pour terminer

Module 5: Mother & Neonate

The peripartum period, the time shortly before, during, and after giving birth, is a time of rapid changes in the mammary gland, the mother, and the neonate. Extensive physiological coordination occurs between the processes leading up to and giving birth, the formation of colostrum, the initiation of lactation in the mammary gland, and the subsequent removal of milk by the neonate. In this module, we explore how the mammary gland changes around the time of giving birth when the gland transitions from a non-lactating to a lactating state. Part of this transition is the production of colostrum, the first mammary secretion produced by the gland after giving birth. Another part of the transition is the changing regulation of mammary gland function from one being driven primarily by hormones associated with pregnancy and parturition to one where milk removal, by the neonate or milking machine, is the driving force in gland function after birth. In this module, we examine some basic characteristics of the neonate, how lactation is initiated (lactogenesis), and the formation and special components of colostrum (immunoglobulins) and their impact on the neonate....
Reading
17 vidéos (Total 124 min), 2 lectures, 7 quiz
Video17 vidéos
A Cow Calving3 min
The Neonate8 min
Lactogenesis & Its Stages7 min
Secretory Differentiation8 min
Secretory Activation & Lactose Synthesis7 min
Hormonal Regulation5 min
Comparative Hormonal Regulation7 min
Prolactin - Sources4 min
Prolactin - Control of Secretion5 min
Prolactin - Other Regulation5 min
Colostrum Composition12 min
Immunoglobulins in Colostrum6 min
Colostrum & the Neonate10 min
Immunoglobulin Receptor6 min
Mammary Transport of Immunoglobulin7 min
Immunoglobulin Transport to the Neonate6 min
Reading2 lectures
Module 5 Overview5 min
Optional: Study Aid5 min
Quiz6 exercices pour s'entraîner
Lesson 5-1 Quiz10 min
Lesson 5-2 Quiz10 min
Lesson 5-3 Quiz10 min
Lesson 5-4 Quiz10 min
Lesson 5-5 Quiz10 min
Week 4 Quiz30 min

Enseignant

Dr. Walter Hurley, PhD

Professor Emeritus
Department of Animal Sciences

À propos de University of Illinois at Urbana-Champaign

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Foire Aux Questions

  • Once you enroll for a Certificate, you’ll have access to all videos, quizzes, and programming assignments (if applicable). Peer review assignments can only be submitted and reviewed once your session has begun. If you choose to explore the course without purchasing, you may not be able to access certain assignments.

  • When you purchase a Certificate you get access to all course materials, including graded assignments. Upon completing the course, your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile. If you only want to read and view the course content, you can audit the course for free.

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