Porifera
... Hermaphroditic- have both functions of male and female They are sequential hermaphrodites First one sex and then changing into the other Or can be asexual Gametes are made from choanocytes or amoebocytes Eggs reside in mesophyl, but sperm are carried out into the water by the water current Cross f ...
... Hermaphroditic- have both functions of male and female They are sequential hermaphrodites First one sex and then changing into the other Or can be asexual Gametes are made from choanocytes or amoebocytes Eggs reside in mesophyl, but sperm are carried out into the water by the water current Cross f ...
Chapter 3: Phylum Cnidaria
... Obtain a slide of three cross-sections through a planarian. Look at the three cross-sections with a microscope. From what you have learned about the digestive unit you should be able to distinguish the sections as anterior, mid-body and posterior. Go to a higher power. You should be able to distingu ...
... Obtain a slide of three cross-sections through a planarian. Look at the three cross-sections with a microscope. From what you have learned about the digestive unit you should be able to distinguish the sections as anterior, mid-body and posterior. Go to a higher power. You should be able to distingu ...
Vascular layer
... •Lens – structure composed of connective tissue and epithelial cells, helps focus light onto the retina Lens is suspended by suspensory ligaments attached to ciliary body. Smooth muscle in ciliary body pulls on lens and changes its shape allowing you to focus light from near or distant objects on r ...
... •Lens – structure composed of connective tissue and epithelial cells, helps focus light onto the retina Lens is suspended by suspensory ligaments attached to ciliary body. Smooth muscle in ciliary body pulls on lens and changes its shape allowing you to focus light from near or distant objects on r ...
MOLLUSK VOCAB ONLY
... A organ specialized for the exchange of gill gases with water _____________ Fan-like structures at the anterior end of a clam that help move food toward the palps mouth _____________ Pigment cells in the outer mantle layer in cephalopods that can produce sudden color change ________________ chromat ...
... A organ specialized for the exchange of gill gases with water _____________ Fan-like structures at the anterior end of a clam that help move food toward the palps mouth _____________ Pigment cells in the outer mantle layer in cephalopods that can produce sudden color change ________________ chromat ...
MOLLUSK VOCAB ONLY
... A organ specialized for the exchange of gill gases with water _____________ Fan-like structures at the anterior end of a clam that help move food toward the palps mouth _____________ Pigment cells in the outer mantle layer in cephalopods that can produce sudden color change ________________ chromat ...
... A organ specialized for the exchange of gill gases with water _____________ Fan-like structures at the anterior end of a clam that help move food toward the palps mouth _____________ Pigment cells in the outer mantle layer in cephalopods that can produce sudden color change ________________ chromat ...
The Cardiovascular System: The Blood
... 1. Where is the heart located? Describe the 2 layers of the pericardium. What are the three main layers of the heart? Describe them. 2. What are sulci? What is found within these structures? 3. List the 4 chambers of the heart in the order in which blood flows through the organ. Which valve connects ...
... 1. Where is the heart located? Describe the 2 layers of the pericardium. What are the three main layers of the heart? Describe them. 2. What are sulci? What is found within these structures? 3. List the 4 chambers of the heart in the order in which blood flows through the organ. Which valve connects ...
Biology 2 - All Hallows Catholic High School
... What happens to the waste material produced by plants and animals? Many trees shed their leaves each year and most animals produce droppings at least once a day. All plants and animals also eventually die. Microbes play an important part in decomposing this material so that it can be used again by p ...
... What happens to the waste material produced by plants and animals? Many trees shed their leaves each year and most animals produce droppings at least once a day. All plants and animals also eventually die. Microbes play an important part in decomposing this material so that it can be used again by p ...
Hematology
... squeeze through the intercellular spaces of capillary walls to fight infection in neighboring tissues. This process is called? ...
... squeeze through the intercellular spaces of capillary walls to fight infection in neighboring tissues. This process is called? ...
Cells, tisand mito, practice Test answers - Coristines
... describe the structures and functions of cell organelles and relate them back to the function of the cell (Ex. sperm cells have more mitochondria) explain the need for specialized cells B2.2 examine cells under a microscope or similar instrument to identify the various stages of mitosis in anima ...
... describe the structures and functions of cell organelles and relate them back to the function of the cell (Ex. sperm cells have more mitochondria) explain the need for specialized cells B2.2 examine cells under a microscope or similar instrument to identify the various stages of mitosis in anima ...
Intro Invertebrates
... that repeat about an imaginary line through the center of the body. • Bilateral Symmetry: having body parts that repeat on either side of the body. • Cephalization (cephalo = head): the gathering of sense organs and nerve cells into the head region. • Ganglia- Clusters of nerve tissue • Hermaphrodit ...
... that repeat about an imaginary line through the center of the body. • Bilateral Symmetry: having body parts that repeat on either side of the body. • Cephalization (cephalo = head): the gathering of sense organs and nerve cells into the head region. • Ganglia- Clusters of nerve tissue • Hermaphrodit ...
Lecture Notes
... Membrane receptors on an oocyte pulls in the head of the first sperm cell to make contact The membrane of the oocyte does not permit a second sperm head to enter - cortical reaction - enzymes prevent any other sperm from binding to the egg The oocyte then undergoes its second meiotic division Fertil ...
... Membrane receptors on an oocyte pulls in the head of the first sperm cell to make contact The membrane of the oocyte does not permit a second sperm head to enter - cortical reaction - enzymes prevent any other sperm from binding to the egg The oocyte then undergoes its second meiotic division Fertil ...
circulatory system
... The cardiovascular centre in the medulla controls the heart rate by sending signals to the SA node that make the heart speed up or slow down. During exercise, CO2 levels rise, and the medulla speeds up the heart rate, which increases the amount of blood going to the lungs. When you have a shock, adr ...
... The cardiovascular centre in the medulla controls the heart rate by sending signals to the SA node that make the heart speed up or slow down. During exercise, CO2 levels rise, and the medulla speeds up the heart rate, which increases the amount of blood going to the lungs. When you have a shock, adr ...
Unit 1 – Biology – Cells PowerPoint
... Missing words reproduction, identical, mitosis, genetic, repair, cycle, grow, chromosomes, cells, asexual, mitochondria, ...
... Missing words reproduction, identical, mitosis, genetic, repair, cycle, grow, chromosomes, cells, asexual, mitochondria, ...
Chapter Thirty-Two: An Overview of Animal Diversity
... True tissues: Collections of specialized cells isolated from other tissues by membrane layers. This is missing in sponges, but in all other animals the embryo becomes layered because of gastrulation forming “germ layers”. The germ layers later develop into various tissues and organs in the body: 1) ...
... True tissues: Collections of specialized cells isolated from other tissues by membrane layers. This is missing in sponges, but in all other animals the embryo becomes layered because of gastrulation forming “germ layers”. The germ layers later develop into various tissues and organs in the body: 1) ...
Study Guide for Exam - Centerville Public Schools
... Fallopian tubes: A pair of tubes through which a mature ovum travels; inside is only the width of two strands of hair FAST – the warning signs of stroke or cerebral vascular accident – Face, Arms, Speech, Time –changes in any of these may indicate an impending stroke ...
... Fallopian tubes: A pair of tubes through which a mature ovum travels; inside is only the width of two strands of hair FAST – the warning signs of stroke or cerebral vascular accident – Face, Arms, Speech, Time –changes in any of these may indicate an impending stroke ...
anatomy test chapter 2 chemistry
... 9. _______________ is always present in proteins and nucleic acids, but not usually present in lipids or carbohydrates. 10. Rapid swings in pH are prevented by _______________ 11. The single most import fuel for body cells is ______________. 12. _____________ proteins are enzymes 13. ____________ pr ...
... 9. _______________ is always present in proteins and nucleic acids, but not usually present in lipids or carbohydrates. 10. Rapid swings in pH are prevented by _______________ 11. The single most import fuel for body cells is ______________. 12. _____________ proteins are enzymes 13. ____________ pr ...
The Breathing System
... The oxygen molecules must diffuse through both the lining of the alveolus and the lining of the blood capillary. They are eventually picked up by red blood cells. ...
... The oxygen molecules must diffuse through both the lining of the alveolus and the lining of the blood capillary. They are eventually picked up by red blood cells. ...
Present
... • hooks and suckers to aid in attachment to intestine • Proglottids: individual parts of worm – Each one is detachable – Each proglottid may contain up to 100,000 eggs which fall off when full – When released, they exit with the host’s wastes ...
... • hooks and suckers to aid in attachment to intestine • Proglottids: individual parts of worm – Each one is detachable – Each proglottid may contain up to 100,000 eggs which fall off when full – When released, they exit with the host’s wastes ...
Short Course in the Physiology of Vision
... the retina sends the visual information to the brain via the optic nerve. The iris and pupil help adjust to bright and dim illumination. As a living tissue, the retina contains cells that sense light, motion and colors, and blood vessels to supply the necessary oxygen and metabolites to support the ...
... the retina sends the visual information to the brain via the optic nerve. The iris and pupil help adjust to bright and dim illumination. As a living tissue, the retina contains cells that sense light, motion and colors, and blood vessels to supply the necessary oxygen and metabolites to support the ...
Full Text
... cells, therefore, appear to be suitable vehicles forthe incorporation of cells bearing foreign genes into a wide range of embryonic tissues. By using donor cells transfected with hybrid genes containing tissue specific promoters controlling the expression of a reporter gene, it should be possible to ...
... cells, therefore, appear to be suitable vehicles forthe incorporation of cells bearing foreign genes into a wide range of embryonic tissues. By using donor cells transfected with hybrid genes containing tissue specific promoters controlling the expression of a reporter gene, it should be possible to ...
Chapter 40 - Cloudfront.net
... 3. Coelomate (or Eucoelmate, or “True” Coelom), in which the coelom is lined both on the inside of the body wall and around the gut by mesoderm. Animals with a true coelom also have mesenteries, which suspend the body organs within the coelom. ...
... 3. Coelomate (or Eucoelmate, or “True” Coelom), in which the coelom is lined both on the inside of the body wall and around the gut by mesoderm. Animals with a true coelom also have mesenteries, which suspend the body organs within the coelom. ...
Formation of body wall
... • During further development, the pericardioperitoneal canals are closed by growth of the pleuroperitoneal folds which will form the pleuroperitoneal membranes. • Further expansion of the pleural cavities relative to mesenchyme of the body wall adds a peripheral rim to the pleuroperitoneal membranes ...
... • During further development, the pericardioperitoneal canals are closed by growth of the pleuroperitoneal folds which will form the pleuroperitoneal membranes. • Further expansion of the pleural cavities relative to mesenchyme of the body wall adds a peripheral rim to the pleuroperitoneal membranes ...
Lecture 4 Tissues V10
... in sites where protection is not important; secretes lubricating substances in serosae. Location: Kidney glomeruli; air sacs of lungs; lining of heart, blood vessels, and lymphatic vessels; lining of ventral body cavity (serosae). ...
... in sites where protection is not important; secretes lubricating substances in serosae. Location: Kidney glomeruli; air sacs of lungs; lining of heart, blood vessels, and lymphatic vessels; lining of ventral body cavity (serosae). ...
Human embryogenesis
Human embryogenesis is the process of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, human development entails growth from a one celled zygote to an adult human being. Fertilisation occurs when the sperm cell successfully enters and fuses with an egg cell (ovum). The genetic material of the sperm and egg then combine to form a single cell called a zygote and the germinal stage of prenatal development commences. Embryogenesis covers the first eight weeks of development and at the beginning of the ninth week the embryo is termed a fetus.Human embryology is the study of this development during the first eight weeks after fertilisation. The normal period of gestation (pregnancy) is nine months or 38 weeks.The germinal stage, refers to the time from fertilization, through the development of the early embryo until implantation is completed in the uterus. The germinal stage takes around 10 days.During this stage, the zygote, which is defined as an embryo because it contains a full complement of genetic material, begins to divide, in a process called cleavage. A blastocyst is then formed and implanted in the uterus. Embryogenesis continues with the next stage of gastrulation when the three germ layers of the embryo form in a process called histogenesis, and the processes of neurulation and organogenesis follow. The embryo is referred to as a fetus in the later stages of prenatal development, usually taken to be at the beginning of the ninth week. In comparison to the embryo, the fetus has more recognizable external features, and a more complete set of developing organs. The entire process of embryogenesis involves coordinated spatial and temporal changes in gene expression, cell growth and cellular differentiation. A nearly identical process occurs in other species, especially among chordates.