CHAPTER 12: MOLLUSCA Mollusca is an enormous taxon 2nd only to Arthropoda in number of living species Includes many familiar animals such as snails‚ clams‚ oysters‚ mussels‚ slugs‚ octopods and squids in seven lining classes Mollusca includes the taxa: Aplacophora consists of small‚ wormlike molluscs w/ numerous calcareous spicules rather than a shell. Polyplacophorans or chitons have eight shell plates Monoplacophorans have a low‚ conical‚ limpetlike shell and live in deep water
Premium
cardiovascular system as comprising two distinct networks of arteries and veins. Galen claimed that the liver produced blood that was then distributed to the body in a centrifugal manner‚ whereas air was absorbed from the lung into the pulmonary veins and carried by arteries to the various tissues of the body. Arteries also contained blood. This was an open-ended system in which blood and air simply dissipated at the ends of veins and arteries according to the needs of the local tissue. Blood was not
Premium Heart Blood
Arteries carry blood away form the heart the extremities and organs. They have typical three layer blood vessel wall structure with a thick tunica media. The walls of arteries are highly compliant due to the elastic fibres present. The wall thickness of the arteries varies in based on the proximity to the heart. The elasticity of arteries allows pressure absorption from the left ventricle of the heart as it pumps blood into the arteries. There are two significant types of arteries‚ elastic and muscular
Premium
September 30‚ 2012 Introduction/Purpose In this lab experiment‚ I examined a pig’s heart and compared it to a human’s heart. The pig’s heart is very similar to a human’s heart by having the same structures‚ veins‚ valves‚ and chambers. I was unable to perform hands on examination on a human heart so I examined a pig’s heart. I was able to identify major areas of the heart and dissect it to examine the inside chambers and valves. This experiment helped me
Premium Heart
ANATOMY AND PHYSIOLOGY Chronic Kidney Disease Cardiovascular System The cardiovascular system is sometimes called the circulatory system. It consists of the heart‚ which is a muscular pumping device‚ and a closed system of vessels called arteries‚ veins‚ and capillaries. As the name implies‚ blood contained in the circulatory system is pumped by the heart around a closed circuit of vessels as it passes again and again through the various "circulations" of the body. The Heart * The heart is enclosed
Premium Heart Blood Kidney
right femoral vein of a healthy female. I am your pilot Kierra Lewis. While we embark on this journey‚ make sure that you keep your hands and feet inside the submarine at all times. Fasten your seat belts and let’s start our journey! We will begin our journey in the femoral vein. As you can see the femoral vein is a blood vessel that is responsible for carrying blood from the leg back to the heart via the iliac veins. This is the largest vein in the groin area. Any blockages in this vein can lead to
Premium Heart Blood
The central nervous system (CNS) is that portion of the vertebrae nervous system that is composed of the brain and spinal cord. Together with the peripheral nervous system (PNS)‚ the other major portion of the nervous system‚ the CNS coordinates the body’s interaction with the environment. The CNS is contained within the dorsal cavity‚ with the brain in the cranial subcavity (the skull)‚ and the spinal cord in the spinal cavity (within the vertebral column). Then human nervous system is the most
Premium Nervous system Brain Neuron
An Overview of Anatomy Laszlo Vass‚ Ed.D. Version 42-0001-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this
Premium Blood Kidney Human anatomy
The body is a very complex mechanism. There are many different veins and arteries that flow throughout the body. With there being many different veins and arteries throughout the body there are multiple paths to get to the lower lobe of the lung. In this paper we will discuss how to get from the femoral vein to the lower lobe of the lung. The path that I have chosen to discuss to get to the lower lobe of the lung from the femoral vein involves the inferior vena cava‚ AV valve‚ right ventricle‚ pulmonary
Premium Blood Heart Immune system
Midwifery Care Study of a Mother with a Normal Pregnancy at Ruiru Sub-District Hospital October‚ 2012 1. Care Study of a Mother with a Normal Pregnancy at Ruiru Sub-District Hospital This work describes the care study of an expectant mother (Irene Magiri Karuthui) comprising of the care processes carried out for the client throughout her antenatal visits‚ the delivery process and the postnatal period. The new approach to Antenatal Care (ANC) emphasizes the quality of care rather than
Free Pregnancy Childbirth Obstetrics