UROCHORDATES
... Pharynx is perforated by numerous GILL SLITS or STIGMATA. Exchange of gases takes place through VASCULAR TRABECULAE. TEST acts as an acessory respiratory system. ...
... Pharynx is perforated by numerous GILL SLITS or STIGMATA. Exchange of gases takes place through VASCULAR TRABECULAE. TEST acts as an acessory respiratory system. ...
Cillia and flagella
... cells are critical to our respiratory health and to the ability to reproduce. The ciliated cells that line our respiratory tract sweep debris trapped within mucus back up the throat, which helps keep the lungs clean similarly, ciliated cells move an egg along the oviduct, where it will be fertilized ...
... cells are critical to our respiratory health and to the ability to reproduce. The ciliated cells that line our respiratory tract sweep debris trapped within mucus back up the throat, which helps keep the lungs clean similarly, ciliated cells move an egg along the oviduct, where it will be fertilized ...
Unit 3 Practice Test Answers
... b. A multicelled blastula c. The formation of a gastrula d. Fertilization 14. Which of the following correctly lists the embryonic stages in the order that they develop? a. Blastula, cleavage, gastrula, gastrulation b. Cleavage, gastrula, gastrulation, blastula c. Cleavage, blastula, gastrulation, ...
... b. A multicelled blastula c. The formation of a gastrula d. Fertilization 14. Which of the following correctly lists the embryonic stages in the order that they develop? a. Blastula, cleavage, gastrula, gastrulation b. Cleavage, gastrula, gastrulation, blastula c. Cleavage, blastula, gastrulation, ...
Zoology
... Metazoans-zygoteblastulagastrula. One side of blastula pushes inward and makes a ...
... Metazoans-zygoteblastulagastrula. One side of blastula pushes inward and makes a ...
Animals
... animals, fertilization may be internal (inside the body) or external (outside the body). • After fertilization, the zygote of different animal species all have similar, genetically determined stages of development. • Fertilization occurs when a sperm cell penetrates the egg cell, forming a new cell ...
... animals, fertilization may be internal (inside the body) or external (outside the body). • After fertilization, the zygote of different animal species all have similar, genetically determined stages of development. • Fertilization occurs when a sperm cell penetrates the egg cell, forming a new cell ...
Chapter 7 Notes - Herscher CUSD #2
... Triploblastic Organization • Tissues derived from three embryological layers – Ectoderm – Mesoderm – gives rise to supportive tissues (bones), contractile tissues (muscles), and blood cells. – Endoderm – Most organisms with this level of organization develop organ systems. • Excretory, nervous, dig ...
... Triploblastic Organization • Tissues derived from three embryological layers – Ectoderm – Mesoderm – gives rise to supportive tissues (bones), contractile tissues (muscles), and blood cells. – Endoderm – Most organisms with this level of organization develop organ systems. • Excretory, nervous, dig ...
Lab 4: Unicellular Algae, and Multicellular Algae
... forms zoospores. The zoospores are haploid and give rise gametophytes. At warmer temperatures the plurilocular sporangie predominate. They are composed of many small cuboidal cells. The contents of each of these cells develops into a zoospore. The zoospers are diploid and give rise to sporophytes. ...
... forms zoospores. The zoospores are haploid and give rise gametophytes. At warmer temperatures the plurilocular sporangie predominate. They are composed of many small cuboidal cells. The contents of each of these cells develops into a zoospore. The zoospers are diploid and give rise to sporophytes. ...
Cells and Systems Notes Topic 1 1. What are five characteristics that
... 12. Explain how fluids move in and out of a cell membrane (be sure to mention osmosis and diffusion in your explanation)? Also be sure to explain where concentrations of nutrients and wastes are higher/lower. ...
... 12. Explain how fluids move in and out of a cell membrane (be sure to mention osmosis and diffusion in your explanation)? Also be sure to explain where concentrations of nutrients and wastes are higher/lower. ...
Study Guide for Life Systems Test
... #21 Compare and contrast a reflex and a response. #22 The two primary body systems that work together to produce a response are the nervous and the _______________________________. #23 What are the three structures of the central nervous system? ...
... #21 Compare and contrast a reflex and a response. #22 The two primary body systems that work together to produce a response are the nervous and the _______________________________. #23 What are the three structures of the central nervous system? ...
fertilization and name the site where fertilization
... considered the innermost germ layer; will form the inner lining (mucosa) of the adult (i.e. digestive, urinary tracts) and some internal organs; At this point, the ectoderm and endoderm are considered the embryonic disc (i.e. will become the embryonic body). ...
... considered the innermost germ layer; will form the inner lining (mucosa) of the adult (i.e. digestive, urinary tracts) and some internal organs; At this point, the ectoderm and endoderm are considered the embryonic disc (i.e. will become the embryonic body). ...
Biology Cell revision
... • All living thins are made up of cells • Cells are living Cells are made up of the following parts: Cell part ...
... • All living thins are made up of cells • Cells are living Cells are made up of the following parts: Cell part ...
Neurodevelopment I
... Prior to gastrulation, cultured regions of ectoderm develop into epidermis. However, if the cells are dissociated – separated by removal of calcium from the medium – then the cells become neurons. This suggests that neural fate is actively suppressed by cellular associations in ectoderm. If bone mor ...
... Prior to gastrulation, cultured regions of ectoderm develop into epidermis. However, if the cells are dissociated – separated by removal of calcium from the medium – then the cells become neurons. This suggests that neural fate is actively suppressed by cellular associations in ectoderm. If bone mor ...
Pg. 387 1-9 - Cobb Learning
... Opening: • Name the three types of muscles and tell me if they are voluntary or involuntary. ...
... Opening: • Name the three types of muscles and tell me if they are voluntary or involuntary. ...
Embryonic Development and Implantation
... 6. Describe the menstrual cycle without fertilization. 7. Describe types of birth control for males and females. 8. Describe the development of a fetus from fertilization of the egg to implantation in the womb. 9. Describe the steps of parturition. 10. Describe the growth and development of the embr ...
... 6. Describe the menstrual cycle without fertilization. 7. Describe types of birth control for males and females. 8. Describe the development of a fetus from fertilization of the egg to implantation in the womb. 9. Describe the steps of parturition. 10. Describe the growth and development of the embr ...
N5- Unit 2 MO1-Cells, tissues, organs, stem cells and meristems 1
... Function: Reproduction/being fertilized by the sperm cell. Adaptations: large cell containing food reserves. Type of cell: Red blood cell Function: carry oxygen Adaptations: contains haemoglobin to carry oxygen, large surface area to allow diffusion, flexible to go through capillaries. 7.What are st ...
... Function: Reproduction/being fertilized by the sperm cell. Adaptations: large cell containing food reserves. Type of cell: Red blood cell Function: carry oxygen Adaptations: contains haemoglobin to carry oxygen, large surface area to allow diffusion, flexible to go through capillaries. 7.What are st ...
levels of organization directed reading
... into five categories: cells, tissues, organs, systems, organism. When we are organizing these parts, you can consider them as levels or parts of a whole. Organisms are made of multiple systems; each system is composed of different organs; each organ can be divided into different tissues; each tissue ...
... into five categories: cells, tissues, organs, systems, organism. When we are organizing these parts, you can consider them as levels or parts of a whole. Organisms are made of multiple systems; each system is composed of different organs; each organ can be divided into different tissues; each tissue ...
National 4/5 Biology - Multicelluar Organisms
... Many living organisms are composed of only one cell - e.g. an amoeba Most living organisms are made of many millions of cells It would be inefficient if every cell performed exactly the same function ...
... Many living organisms are composed of only one cell - e.g. an amoeba Most living organisms are made of many millions of cells It would be inefficient if every cell performed exactly the same function ...
Pregnancy & Development
... After meiosis II is completed, male & female pronuclei fuse & produce a zygote, which almost immediately enters into mitosis. ...
... After meiosis II is completed, male & female pronuclei fuse & produce a zygote, which almost immediately enters into mitosis. ...
video summaries: cells
... The%movement%of%water from%an%area%of% high%concentra2on%to%low%concentra2on% ...
... The%movement%of%water from%an%area%of% high%concentra2on%to%low%concentra2on% ...
231_study guide
... MAIN IDEA: Early studies led to the development of the cell theory. In a phrase, tell what each scientist did to help develop the cell theory. Scientist ...
... MAIN IDEA: Early studies led to the development of the cell theory. In a phrase, tell what each scientist did to help develop the cell theory. Scientist ...
Ch. 3 Review - Cobb Learning
... c. a group of tissues that work together to perform a specific job d. a body structure, such as muscles or lungs ______ 8. The benefits of being multicellular include a. small size, long life, and cell specialization. b. generalized cells, longer life, and ability to prey on small animals. c. larger ...
... c. a group of tissues that work together to perform a specific job d. a body structure, such as muscles or lungs ______ 8. The benefits of being multicellular include a. small size, long life, and cell specialization. b. generalized cells, longer life, and ability to prey on small animals. c. larger ...
File - John`s AP Biology Review
... Cleavage is relatively slow in mammals and the zygote has no apparent polarity. - Cleavage planes appear randomly oriented and blastomeres are of equal size. The development of a human embryo can represent mammalian development. - Cleavage is relatively slow with the first, second and third divisio ...
... Cleavage is relatively slow in mammals and the zygote has no apparent polarity. - Cleavage planes appear randomly oriented and blastomeres are of equal size. The development of a human embryo can represent mammalian development. - Cleavage is relatively slow with the first, second and third divisio ...
Unit 25.3: From Fertilization to Old Age
... potential is what makes these cells very good candidates for medical treatments, such as treating individuals with heart disease. Lesson Summary • Fertilization is the union of a sperm and egg, resulting in the formation of a zygote. The zygote undergoes many cell divisions before it implants in the ...
... potential is what makes these cells very good candidates for medical treatments, such as treating individuals with heart disease. Lesson Summary • Fertilization is the union of a sperm and egg, resulting in the formation of a zygote. The zygote undergoes many cell divisions before it implants in the ...
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.