The Lymphatic System (Immune System) Nonspecific Resistance
... Five things serve to return lymph back in the direction of the heart. 1. Skeletal muscle pump - Lymph is circulated by skeletal muscle action, that squeezes the vessels and move the lymph along. 2. One-way valves - The lymphatic vessels contain one-way valves. Once lymph is moved past a valve, it ca ...
... Five things serve to return lymph back in the direction of the heart. 1. Skeletal muscle pump - Lymph is circulated by skeletal muscle action, that squeezes the vessels and move the lymph along. 2. One-way valves - The lymphatic vessels contain one-way valves. Once lymph is moved past a valve, it ca ...
Chapter 4: Tissues and Membranes Theory Lecture Outline
... b. Connective membranes Epithelial Membranes Two types or classifications – mucous or serous membranes • Mucous membranes Mucous membranes line surfaces and spaces that lead to the outside of the body (respiratory, digestive, reproductive and urinary) and produce a substance called mucus which lubri ...
... b. Connective membranes Epithelial Membranes Two types or classifications – mucous or serous membranes • Mucous membranes Mucous membranes line surfaces and spaces that lead to the outside of the body (respiratory, digestive, reproductive and urinary) and produce a substance called mucus which lubri ...
Perth Academy N5 Biology Multicellular Organisms Homework Booklet
... 3. Sperm production in humans is controlled by two hormones, P and Q. As levels of P rise, sperm production increases. As levels of Q rise, sperm production decreases. Which of the graphs below shows the changes in hormone levels of a man whose sperm production is decreasing? ...
... 3. Sperm production in humans is controlled by two hormones, P and Q. As levels of P rise, sperm production increases. As levels of Q rise, sperm production decreases. Which of the graphs below shows the changes in hormone levels of a man whose sperm production is decreasing? ...
The Respiratory System
... • Lungs surrounded by pleural membrane – Parietal pleura attached to diaphragm and lining thoracic wall – Visceral pleura attached to lungs – Pleural cavity with little fluid between pleurae ...
... • Lungs surrounded by pleural membrane – Parietal pleura attached to diaphragm and lining thoracic wall – Visceral pleura attached to lungs – Pleural cavity with little fluid between pleurae ...
BI 101: Invertebrate Animals
... Cnidaria: Symbiosis Coral is a mutualism between photosynthetic dinoflagellates (protist) and a cniderian (animal) • Algae in coral called zooxanthelle ...
... Cnidaria: Symbiosis Coral is a mutualism between photosynthetic dinoflagellates (protist) and a cniderian (animal) • Algae in coral called zooxanthelle ...
Organ
... Excretory System Functions: Removes liquid and solid wastes from the body Organs: kidney, colon, spleen Tissue: smooth muscle ...
... Excretory System Functions: Removes liquid and solid wastes from the body Organs: kidney, colon, spleen Tissue: smooth muscle ...
Cellular Organization - Bremen High School District 228
... Understand how prokaryotic cells, eukaryotic cells (whether of animals or plants and whether unicellular or multicellular), and viruses differ in complexity and structure. In particular: 1. Prokaryotes are organisms whose cells lack nuclei. They are usually small and unicellular. 2. Eukaryotes are o ...
... Understand how prokaryotic cells, eukaryotic cells (whether of animals or plants and whether unicellular or multicellular), and viruses differ in complexity and structure. In particular: 1. Prokaryotes are organisms whose cells lack nuclei. They are usually small and unicellular. 2. Eukaryotes are o ...
B2-Topic-3-notes - Greenacre Academy Trust
... growing when they become adults In an animal, cells that can differentiate to form many different types of specialised cells are called stem cells: o Embryonic stem cells can differentiate and form almost any type of cell in the body o However, adult stem cells can only develop into a limited range ...
... growing when they become adults In an animal, cells that can differentiate to form many different types of specialised cells are called stem cells: o Embryonic stem cells can differentiate and form almost any type of cell in the body o However, adult stem cells can only develop into a limited range ...
cnidarian key
... •phylum Cnidaria gets its name from the stinging cell (cnidocyte) that is found all members •the cnidocyte contains a stinging structure called a nematocyst •all cnidarians are soft-bodied animals with stinging tentacles arranged around their mouth B. Body Forms: Polyp and Medusa •both forms consist ...
... •phylum Cnidaria gets its name from the stinging cell (cnidocyte) that is found all members •the cnidocyte contains a stinging structure called a nematocyst •all cnidarians are soft-bodied animals with stinging tentacles arranged around their mouth B. Body Forms: Polyp and Medusa •both forms consist ...
Primer - Workforce Development in Stem Cell Research
... development, many genes are expressed at early times and shut off later, while others are only turned on in the final stages differentiation when the cell is mature. One goal of stem cell research is to identify and control genes that allow a stem cell to divide and maintain its pluripotency, as we ...
... development, many genes are expressed at early times and shut off later, while others are only turned on in the final stages differentiation when the cell is mature. One goal of stem cell research is to identify and control genes that allow a stem cell to divide and maintain its pluripotency, as we ...
Chapter 24 - Structure and Organization of Flowering Plants 24.1
... 2. The paper making process involves grinding plant material to form a pulp that contains “fibers,” or vascular tissue. 3. The fibers form a sheet when they are screened from the pulp. 4. Pulp must be chemically treated to remove lignin. 5. If a small amount of lignin is removed, then the paper is b ...
... 2. The paper making process involves grinding plant material to form a pulp that contains “fibers,” or vascular tissue. 3. The fibers form a sheet when they are screened from the pulp. 4. Pulp must be chemically treated to remove lignin. 5. If a small amount of lignin is removed, then the paper is b ...
Daphne High School ACOS General Biology Project This sheet must
... you will be completing this project. The science portion of the AHSGE has 90 multiple choice questions. Your completed project will be an effective tool to use as a study guide when preparing to take the AHSGE. If done properly this project will be a concise summery of what you learn throughout the ...
... you will be completing this project. The science portion of the AHSGE has 90 multiple choice questions. Your completed project will be an effective tool to use as a study guide when preparing to take the AHSGE. If done properly this project will be a concise summery of what you learn throughout the ...
eye-layers 1
... Continuous with choroid behind and iris in front Like a flat ring applied to inner scleral surface Thick in front, thin behind Triangular ;2 lond sides in contact with sclera and vitroeus • Attachment of iris halfway along flat anterior short base ...
... Continuous with choroid behind and iris in front Like a flat ring applied to inner scleral surface Thick in front, thin behind Triangular ;2 lond sides in contact with sclera and vitroeus • Attachment of iris halfway along flat anterior short base ...
Respiratory System
... False Vocal cords- musc/conn. tissue; same function as epiglottis True Vocal cords- musc/elastic fibers; vibrate with air passage; helps form words ...
... False Vocal cords- musc/conn. tissue; same function as epiglottis True Vocal cords- musc/elastic fibers; vibrate with air passage; helps form words ...
Page 18 - Educast
... Although mitosis is a continuous process, its karyokinesis can be divided for convenience into four phases which are Prophase, Metaphase, Anaphase and Telophase. Let us now study mitosis is an animal cell. i) ...
... Although mitosis is a continuous process, its karyokinesis can be divided for convenience into four phases which are Prophase, Metaphase, Anaphase and Telophase. Let us now study mitosis is an animal cell. i) ...
Frog Dissection Pre-lab
... edge of the upper jaw bears small maxillary teeth (B); the lower jaw has none. The roof of the mouth is contains a pair of internal nostrils (C) which allows air into the mouth from the external nostrils. Between these are the vomerine teeth (B’), which are used for holding prey. At the angle of the ...
... edge of the upper jaw bears small maxillary teeth (B); the lower jaw has none. The roof of the mouth is contains a pair of internal nostrils (C) which allows air into the mouth from the external nostrils. Between these are the vomerine teeth (B’), which are used for holding prey. At the angle of the ...
Respiratory System 9.1-9.2
... ________ for cellular respiration, and they must expel ____________, the _______ product of this process. • It is important not to confuse gas exchange, the traffic of O2& CO2 between the animal & its environment, with the metabolic process of ...
... ________ for cellular respiration, and they must expel ____________, the _______ product of this process. • It is important not to confuse gas exchange, the traffic of O2& CO2 between the animal & its environment, with the metabolic process of ...
Fishes, Amphibians, Birds, Reptiles, Mammals
... The chorion regulates the transport of oxygen from the surface of the egg to the embryo and the transport of carbon dioxide, one product of respiration, in the opposite direction. ...
... The chorion regulates the transport of oxygen from the surface of the egg to the embryo and the transport of carbon dioxide, one product of respiration, in the opposite direction. ...
Bio. Unit 10 Invertebrates Test
... ______1. These fossils were the first multicellular animals with bilateral symmetry and segmentation. a. Burgess Shale b. Mongolia c. Ediacaran hills d. La Brea tar pits _____ 2. The ancestors of most modern animal phyla first appeared during this period. a. Pre-cambrian b. Ediacaran c. Silurian d. ...
... ______1. These fossils were the first multicellular animals with bilateral symmetry and segmentation. a. Burgess Shale b. Mongolia c. Ediacaran hills d. La Brea tar pits _____ 2. The ancestors of most modern animal phyla first appeared during this period. a. Pre-cambrian b. Ediacaran c. Silurian d. ...
Chapter 4
... a place where two bones joint meet. cartilage • Flexible ___________ covers and protects the joints ends of bones at ________. shape • The _______ of cartilage surfaces and the way they fit together determines the _________ a direction joint can move. • Strong cords of tissue called ________ ligamen ...
... a place where two bones joint meet. cartilage • Flexible ___________ covers and protects the joints ends of bones at ________. shape • The _______ of cartilage surfaces and the way they fit together determines the _________ a direction joint can move. • Strong cords of tissue called ________ ligamen ...
Respiratory System notes File
... -cartilage walls (9 pieces in a box shape) lined w/ mucous membranes -thyroid cartilage – front piece (enlarged in males = Adam’s apple) -epiglottis – suspended by muscles and ligaments over the glottis opening of larynx -upright position to allow air to pass through, except during swallowing e ...
... -cartilage walls (9 pieces in a box shape) lined w/ mucous membranes -thyroid cartilage – front piece (enlarged in males = Adam’s apple) -epiglottis – suspended by muscles and ligaments over the glottis opening of larynx -upright position to allow air to pass through, except during swallowing e ...
kingdom anamalia
... BODY CAVITIES coelome = body cavity –Acoelomates - no coelom; packed solidly with tissue between the gut and body wall –Pseudocoelomates - false coelom; not lined by mesoderm-derived tissue –Coelomates – have a true coelom; cavity that develops from tissue derived from the mesoderm germ layer; fluid ...
... BODY CAVITIES coelome = body cavity –Acoelomates - no coelom; packed solidly with tissue between the gut and body wall –Pseudocoelomates - false coelom; not lined by mesoderm-derived tissue –Coelomates – have a true coelom; cavity that develops from tissue derived from the mesoderm germ layer; fluid ...
chapter_3_presentation
... capillaries. It is here that gases are exchanged. Oxygen and carbon dioxide pass back and forth between the air in the alveoli (respiratory system) and the blood in the capillaries (circulatory system). Oxygen passes from the alveoli into the capillaries by dif fusion. The air in your alveoli ha ...
... capillaries. It is here that gases are exchanged. Oxygen and carbon dioxide pass back and forth between the air in the alveoli (respiratory system) and the blood in the capillaries (circulatory system). Oxygen passes from the alveoli into the capillaries by dif fusion. The air in your alveoli ha ...
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.