Once sperm has entered the the oocyte, an ootid is formed. During …
Once sperm has entered the the oocyte, an ootid is formed. During early stages the ootid will contain male and female pronuclei along with the first and second polar bodies. Fusion of the male and female pronuclei will result in a single diploid nucleus or syngamy. Once syngamy has occurred, the zona pellucida then develops into an imprenetrable layer that prevents polyspermy and so polyploidy. Once the zona pellucida has developed, the ootid is now referred to as a zygote (diploid) and will begin undergoing mitotic divisions via a cleavage process that will begin to give rise to daughter cells called blastomeres. These cleavage divisions will begin to produce a 4-celled embryo and then an 8-celled embryo.
The Blood Brain Barrier refers to the mechanisms in place around the …
The Blood Brain Barrier refers to the mechanisms in place around the microvasculature of the brain to ensure optimal neural functioning. Endothelial cells are the structural basis of the blood brain barrier and are joined by tight cellular junctions formed by the transmembrane proteins the occludins and the claudins.
This page has links to many topics centered around blood pressure: blood …
This page has links to many topics centered around blood pressure: blood pressure measurement, physiology, kidney control of blood pressure, renal blood pressure, and the renin angiotensin aldosterine system
Osteogenesis is the formation of bone. Bone forms from one of three …
Osteogenesis is the formation of bone. Bone forms from one of three lineages; the skull forms from the neural crest; the limb skeleton forms from the lateral plate mesoderm; and the axial skeleton forms from the paraxial mesoderm (sclerotome).
An advanced course covering anatomical, physiological, behavioral, and computational studies of the …
An advanced course covering anatomical, physiological, behavioral, and computational studies of the central nervous system relevant to speech and hearing. Students learn primarily by discussions of scientific papers on topics of current interest. Recent topics include cell types and neural circuits in the auditory brainstem, organization and processing in the auditory cortex, auditory reflexes and descending systems, functional imaging of the human auditory system, quantitative methods for relating neural responses to behavior, speech motor control, cortical representation of language, and auditory learning in songbirds.
The trachea bifurcates at the levels of the 4th-6th intercostal space, approximately …
The trachea bifurcates at the levels of the 4th-6th intercostal space, approximately halfway between the thoracic inlet and the diaphragm. It divides into two principle bronchi, tubes which conduct air into the lungs, and they divide into two lobar bronchi for the left lung, and into four lobar bronchi for the right lung. These further divide into smaller bronchi and bronchioles within the lung tissue.
The Bursa of Fabricus is a primary lymphoid organ found in birds. …
The Bursa of Fabricus is a primary lymphoid organ found in birds. The bursa was the first place that a certain subset of lymphocytes was observed and consequently they were named B lymphocytes (bursa of Fabricius or bursa equivalent organs). The bursa is involved in the differentiation of B lymphocytes.
Development of the Central Nervous System (CNS) includes development of the brain, …
Development of the Central Nervous System (CNS) includes development of the brain, spinal cord, optic and auditory systems, as well as surrounding supporting cells including ependymal cells, astrocytes, oligodendrocytes and microglia. Information within this page will exclude development of the Peripheral Nervous System (PNS) which includes nerve and ganglia formation.
Blood is supplied to the brain from a ventral arterial supply in …
Blood is supplied to the brain from a ventral arterial supply in all species; from a circle of arteries called the Circle of Willis (also called the cerebral arterial circle or arterial circle of Willis) which lies ventrally to the hypothalamus where it forms a loose ring around the infundibular stalk. Although the appearance of the circle of Willis is fairly constant amongst mammals, the sources of blood supply to the circle and the direction of flow around the circle are very species specific. Blood is supplied to the brain by the internal carotid artery in dogs and horses whilst in other domestic species the main blood supply is from branches of the maxillary artery.
The cecum is a blind ending diverticulum of the large intestine and …
The cecum is a blind ending diverticulum of the large intestine and it exists at the junction of the ileum and the ascending colon. Its size and physiological importance varies between species. It is a site of microbial fermentation, absorption and transportation.
Camelids have a similar digestive structure to other ruminants, although camelids only …
Camelids have a similar digestive structure to other ruminants, although camelids only have three separate stomach compartments compared to the four found in domestic species. The first element of the camelid GI tract, known as C1, can be compared to the rumen whilst the second, known as C2 can be compared to the reticulum. The final element of the tract, C3 can be compared to the abomasum. Therefore camelids do not have a structure comparable to an omasum.
The mammalian cardiovascular and respiratory systems have evolved primarily to provide the …
The mammalian cardiovascular and respiratory systems have evolved primarily to provide the tissues of the body with oxygen and to remove carbon dioxide. The cardiorespiratory system also has metabolic and heat exchange roles.
We continue our study of the cardiovascular system by examining the chambers …
We continue our study of the cardiovascular system by examining the chambers of the heart.
The concepts covered in this video include: -Right Atrium -Right Ventricle -Left Atrium -Left Ventricle
Lesson 3 in our Cardiovascular System (Heart and Blood Vessels) series. This is part of our Anatomy and Physiology lecture series.
If this video helps you please be sure to LST -like subscribe and tell your friends. Your support helps us make more videos. For the complete series please visit http://mrfordsclass.net/
Heart and Blood Vessels Videos -Heart Fundamentals (14:01): http://youtu.be/Y335KJ-EuDw -Layers of the Heart (14:02): http://youtu.be/8PlwFTwJRMQ -Chambers in the Heart (14:03): http://youtu.be/SdNQtPzUfHg -Introduction to Blood Vessels (14:08): http://youtu.be/GVs8cd6jv94 -Types of Blood Vessels (14:09): http://youtu.be/_jkQR8v-bAg -Movement of Blood (14:11): http://youtu.be/x9dH5TpKntk
We take a look at the basic composition of blood. Blood is …
We take a look at the basic composition of blood. Blood is composed of liquids and solids. The solids are called the formed elements while the liquid portion is called plasma. The solids of the blood consists of red blood cells, white blood cells and platelets . The plasma is mostly water, but it does contain some plasma proteins, dissolved gases, nutrients and electrolytes.
Lesson 2 in our Cardiovascular System (Blood) series. This is part of our Anatomy and Physiology lecture series.
If this video helps you please be sure to LST -like subscribe and tell your friends. Your support helps us make more videos. For the complete series please visit http://mrfordsclass.net/
Heart and Blood Vessels Videos -Heart Fundamentals (14:01): http://youtu.be/Y335KJ-EuDw -Layers of the Heart (14:02): http://youtu.be/8PlwFTwJRMQ -Chambers in the Heart (14:03): http://youtu.be/SdNQtPzUfHg -Introduction to Blood Vessels (14:08): http://youtu.be/GVs8cd6jv94 -Types of Blood Vessels (14:09): http://youtu.be/_jkQR8v-bAg -Movement of Blood (14:11): http://youtu.be/x9dH5TpKntk
We begin our study of the cardiovascular system by going over some …
We begin our study of the cardiovascular system by going over some basics of the system as well as taking our first look at the heart.
The concepts covered in this video include: -Pulmonary Circuit -Systemic Circuit -Location of the heart -Surfaces of the heart: base apex, Inferior/Diaphragmatic, Anterior/Sternocostal, and Left/Pulmonary
Lesson 1 in our Cardiovascular System (Heart and Blood Vessels) series. This is part of our Anatomy and Physiology lecture series.
If this video helps you please be sure to LST -like subscribe and tell your friends. Your support helps us make more videos. For the complete series please visit http://mrfordsclass.net/
Heart and Blood Vessels Videos -Heart Fundamentals (14:01): http://youtu.be/Y335KJ-EuDw -Layers of the Heart (14:02): http://youtu.be/8PlwFTwJRMQ -Chambers in the Heart (14:03): http://youtu.be/SdNQtPzUfHg -Introduction to Blood Vessels (14:08): http://youtu.be/GVs8cd6jv94 -Types of Blood Vessels (14:09): http://youtu.be/_jkQR8v-bAg -Movement of Blood (14:11): http://youtu.be/x9dH5TpKntk
In this video take a look at hematopoiesis (haematopoiesis), or the creation …
In this video take a look at hematopoiesis (haematopoiesis), or the creation of blood. While we are still embryos the formation of blood can occur in multiple sites. After birth production primary takes place in red bone marrow.
All blood cells that are circulating derive from pluripotential hematopoietic cells also known as hematopoietic stem cells (HSCs). These stem cells can form any of the blood cells or other stem cells. Hematopoietic Growth Factor will help determine what the stem cell grows into.
There are three families that blood cells can grow up to become: 1) Erythroid cells, 2) Lymphocytes, and 3) Myelocytes.
Lesson 3 in our Cardiovascular System (Blood) series. This is part of our Anatomy and Physiology lecture series.
If this video helps you please be sure to LST -like subscribe and tell your friends. Your support helps us make more videos. For the complete series please visit http://mrfordsclass.net/
Heart and Blood Vessels Videos -Heart Fundamentals (14:01): http://youtu.be/Y335KJ-EuDw -Layers of the Heart (14:02): http://youtu.be/8PlwFTwJRMQ -Chambers in the Heart (14:03): http://youtu.be/SdNQtPzUfHg -Introduction to Blood Vessels (14:08): http://youtu.be/GVs8cd6jv94 -Types of Blood Vessels (14:09): http://youtu.be/_jkQR8v-bAg -Movement of Blood (14:11): http://youtu.be/x9dH5TpKntk
In this anatomy physiology video we take a look at the functions …
In this anatomy physiology video we take a look at the functions of blood and the general composition of blood.
Lesson 1 in our Cardiovascular System (Blood) series. This is part of our Anatomy and Physiology lecture series.
If this video helps you please be sure to LST -like subscribe and tell your friends. Your support helps us make more videos. For the complete series please visit http://mrfordsclass.net/
Heart and Blood Vessels Videos -Heart Fundamentals (14:01): http://youtu.be/Y335KJ-EuDw -Layers of the Heart (14:02): http://youtu.be/8PlwFTwJRMQ -Chambers in the Heart (14:03): http://youtu.be/SdNQtPzUfHg -Introduction to Blood Vessels (14:08): http://youtu.be/GVs8cd6jv94 -Types of Blood Vessels (14:09): http://youtu.be/_jkQR8v-bAg -Movement of Blood (14:11): http://youtu.be/x9dH5TpKntk
This video kicks off the blood vessels series. The concepts covered in …
This video kicks off the blood vessels series. The concepts covered in this video include: -The functions of the cardiovascular system -The components of the cardiovascular system -The major divisions of the cardiovascular system: pulmonary circuit and systemic circuit
Lesson 8 in our Cardiovascular System (Heart and Blood Vessels) series. This is part of our Anatomy and Physiology lecture series.
If this video helps you please be sure to LST -like subscribe and tell your friends. Your support helps us make more videos. For the complete series please visit http://mrfordsclass.net/
Heart and Blood Vessels Videos -Heart Fundamentals (14:01): http://youtu.be/Y335KJ-EuDw -Layers of the Heart (14:02): http://youtu.be/8PlwFTwJRMQ -Chambers in the Heart (14:03): http://youtu.be/SdNQtPzUfHg -Introduction to Blood Vessels (14:08): http://youtu.be/GVs8cd6jv94 -Types of Blood Vessels (14:09): http://youtu.be/_jkQR8v-bAg -Movement of Blood (14:11): http://youtu.be/x9dH5TpKntk
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