NSC 203 - National Open University of Nigeria
... Website of NOUN. There are activities and assignments online for every unit every week. It is important that you visit the course sites weekly and do all assignments to meet deadlines and to contribute to the topical issues that would be raised for everyone’s contribution. You will be expected to re ...
... Website of NOUN. There are activities and assignments online for every unit every week. It is important that you visit the course sites weekly and do all assignments to meet deadlines and to contribute to the topical issues that would be raised for everyone’s contribution. You will be expected to re ...
Grade 7: The Respiratory System and Lungs
... The breathing process occurs automatically. Our breath adjusts to our needs without us having to do anything consciously. At the same time, though, it is a body function over which we can exercise a lot of control--speeding it up or slowing it down instantaneously and at will. There is virtually no ...
... The breathing process occurs automatically. Our breath adjusts to our needs without us having to do anything consciously. At the same time, though, it is a body function over which we can exercise a lot of control--speeding it up or slowing it down instantaneously and at will. There is virtually no ...
Diffusion 1 of 27 © Boardworks Ltd 2011
... Carbon dioxide is the waste gas produced by respiration. Carbon dioxide diffuses from body tissues into the bloodstream and is exhaled via the lungs. Where does gas exchange take place in the lungs? 12 of 27 ...
... Carbon dioxide is the waste gas produced by respiration. Carbon dioxide diffuses from body tissues into the bloodstream and is exhaled via the lungs. Where does gas exchange take place in the lungs? 12 of 27 ...
Nutrition for dogs with heart disease
... The right side of the heart pumps the de-oxygenated blood back to the lungs where carbon dioxide is removed and more oxygen is picked up. The left and right sides of the heart are separate, so that the entire system is a circuit moving blood in one direction through the body. Most forms of heart fai ...
... The right side of the heart pumps the de-oxygenated blood back to the lungs where carbon dioxide is removed and more oxygen is picked up. The left and right sides of the heart are separate, so that the entire system is a circuit moving blood in one direction through the body. Most forms of heart fai ...
Biology revision
... produce offspring that have characteristics of both – the hybrids are often infertile) 3. ring species – neighbouring populations of species may have slightly different characteristics but can still interbreed as part of a chain but the two ends of the chain can’t ...
... produce offspring that have characteristics of both – the hybrids are often infertile) 3. ring species – neighbouring populations of species may have slightly different characteristics but can still interbreed as part of a chain but the two ends of the chain can’t ...
PDF
... direct effect on their metabolic rate and the length of the mitotic cycle. Since the growth-rate of vertebrae follows the local temperature so closely, variation in tail length is unlikely to be explained by any systemic adaptation designed to alter the surface area available for temperature regulat ...
... direct effect on their metabolic rate and the length of the mitotic cycle. Since the growth-rate of vertebrae follows the local temperature so closely, variation in tail length is unlikely to be explained by any systemic adaptation designed to alter the surface area available for temperature regulat ...
phenotypic-plasticity-essay 23 kb phenotypic-plasticity
... Developmental plasticity is an evolutionary adaptation allowing individuals to ‘match’ their phenotype to their surroundings if the environment changes predictably within the course of the organism’s lifecycle. Phenotypic plasticity includes all types of environmentally-induced changes (morphologica ...
... Developmental plasticity is an evolutionary adaptation allowing individuals to ‘match’ their phenotype to their surroundings if the environment changes predictably within the course of the organism’s lifecycle. Phenotypic plasticity includes all types of environmentally-induced changes (morphologica ...
sprirometry lab
... can be exhaled is released from the lungs. This lowers the carbon dioxide (CO2) in the blood stream. Then a deep breath is taken. This raises the oxygen in the blood. If this is done enough a person will be able to hold their breath for a much longer time. There is a sensor in the carotid artery goi ...
... can be exhaled is released from the lungs. This lowers the carbon dioxide (CO2) in the blood stream. Then a deep breath is taken. This raises the oxygen in the blood. If this is done enough a person will be able to hold their breath for a much longer time. There is a sensor in the carotid artery goi ...
Respiratory System
... symptoms and no known causes. Risk Factors • More common in male infants • Babies between the ages of 2 weeks and 6 months are most susceptible • Premature or low birth weight babies are at risk • Babies with a sibling that died of SIDS • African American and Native American babies are at highest ri ...
... symptoms and no known causes. Risk Factors • More common in male infants • Babies between the ages of 2 weeks and 6 months are most susceptible • Premature or low birth weight babies are at risk • Babies with a sibling that died of SIDS • African American and Native American babies are at highest ri ...
Chapter - ISpatula
... their prey. Many animals had protective spikes or armor as well as modified mouthparts that enabled their bearers to filter food from the water. Worms slithered in the bottom muck, feeding on organic matter. Amidst this bustle, it would have been easy to overlook certain slender, 3-cm-long creatures g ...
... their prey. Many animals had protective spikes or armor as well as modified mouthparts that enabled their bearers to filter food from the water. Worms slithered in the bottom muck, feeding on organic matter. Amidst this bustle, it would have been easy to overlook certain slender, 3-cm-long creatures g ...
Slides - gserianne.com
... Lungs at Rest When lungs are at rest, the pressure on the inside of the lungs is equal to the pressure on the outside of the thorax Figure from: Hole’s Human A&P, 12 ...
... Lungs at Rest When lungs are at rest, the pressure on the inside of the lungs is equal to the pressure on the outside of the thorax Figure from: Hole’s Human A&P, 12 ...
theory of evolution
... 24) cave fish are vestigial 25) flightless birds (ostrich) 26) pelvic bones in whales 27) an adult python pelvic legs can be seen ...
... 24) cave fish are vestigial 25) flightless birds (ostrich) 26) pelvic bones in whales 27) an adult python pelvic legs can be seen ...
The Evolution of Mammalness
... increasing metabolism during activity, and their ability to maintain constant body temperatures by complex mechanisms of heat production, insulation, and heat loss. If it were not for these reasons, mammals probably would not dominate the terrestrial fauna today. The problems that the early mammal-l ...
... increasing metabolism during activity, and their ability to maintain constant body temperatures by complex mechanisms of heat production, insulation, and heat loss. If it were not for these reasons, mammals probably would not dominate the terrestrial fauna today. The problems that the early mammal-l ...
the body in motion
... There are three broad categories of joints in the human body. The first type is the immoveable or fibrous joint. These are generally found between flat bones whose main function is to protect vital organs. An example is the eight bones that are fused together by fibrous sutures to form the cranium o ...
... There are three broad categories of joints in the human body. The first type is the immoveable or fibrous joint. These are generally found between flat bones whose main function is to protect vital organs. An example is the eight bones that are fused together by fibrous sutures to form the cranium o ...
Basal Metabolic Rate
... mass. This extensive data set did not essentially alter the 0.73 value for power function of body mass to which mammalian BMR was related. Like many scientists, Benedict found this relationship perplexing, and in his famous 1938 Vital Energetics monograph, he had a section titled “Futility of Attemp ...
... mass. This extensive data set did not essentially alter the 0.73 value for power function of body mass to which mammalian BMR was related. Like many scientists, Benedict found this relationship perplexing, and in his famous 1938 Vital Energetics monograph, he had a section titled “Futility of Attemp ...
What is Blood?
... Red blood cells and haemoglobin Red blood cells loaded with oxyhaemoglobin carry oxygen from the lungs to the body’s cells. Here, oxyhaemoglobin changes back to haemoglobin and oxygen is released. ...
... Red blood cells and haemoglobin Red blood cells loaded with oxyhaemoglobin carry oxygen from the lungs to the body’s cells. Here, oxyhaemoglobin changes back to haemoglobin and oxygen is released. ...
Lungs and External Exchanges of Gases (cont.)
... • Disorders of the liver can have a significant effect on human health. – Jaundice occurs when there is an excessive concentration of bile pigments in the blood. – Hepatitis is a viral infection of the liver. – During cirrhosis, liver tissue changes to become fatty and then non-functional scar tissu ...
... • Disorders of the liver can have a significant effect on human health. – Jaundice occurs when there is an excessive concentration of bile pigments in the blood. – Hepatitis is a viral infection of the liver. – During cirrhosis, liver tissue changes to become fatty and then non-functional scar tissu ...
PDF - Gilchrist Lab
... 1. How fast does evolution occur in nature (Darwin 1859; Simpson 1944; Hendry and Kinnison 1999)? In simple laboratory experiments, evolution is often extremely rapid (Rose et al. 1987; Lenski et al. 1991; Partridge et al. 1995). To determine whether evolution can also be fast in nature, one can mon ...
... 1. How fast does evolution occur in nature (Darwin 1859; Simpson 1944; Hendry and Kinnison 1999)? In simple laboratory experiments, evolution is often extremely rapid (Rose et al. 1987; Lenski et al. 1991; Partridge et al. 1995). To determine whether evolution can also be fast in nature, one can mon ...
Respiratory System
... It’s all about your diaphragm. This dome-shaped muscle sits below your lungs, and it helps your windbags inhale and exhale. When you get hit in the abdomen, this can cause a pressure difference that makes your diaphragm spasm for a few seconds. You can't catch your breath until the spasm stops. ...
... It’s all about your diaphragm. This dome-shaped muscle sits below your lungs, and it helps your windbags inhale and exhale. When you get hit in the abdomen, this can cause a pressure difference that makes your diaphragm spasm for a few seconds. You can't catch your breath until the spasm stops. ...
Earthworm - La Beccaccia Scientifica
... The term acid rain was coined in 1982, by Robern A. Smith. Acid rain is one of major concerns of biologists and environment researchers. In simpler terms, an acid rain can simply be defined as the event of the rain in which rain water is much more acidic then normal. It is a result of interaction o ...
... The term acid rain was coined in 1982, by Robern A. Smith. Acid rain is one of major concerns of biologists and environment researchers. In simpler terms, an acid rain can simply be defined as the event of the rain in which rain water is much more acidic then normal. It is a result of interaction o ...
Evolution Programs
... predicts accumulation of early branching, species‐poor clades towards the geographic periphery James Albert Evolutionary rate heterogeneity among learned and innate Molecular networks of plant vocalizations within two ...
... predicts accumulation of early branching, species‐poor clades towards the geographic periphery James Albert Evolutionary rate heterogeneity among learned and innate Molecular networks of plant vocalizations within two ...
34-The Origin and Evolution of Vertebrates
... their prey. Many animals had protective spikes or armor as well as modified mouthparts that enabled their bearers to filter food from the water. Worms slithered in the bottom muck, feeding on organic matter. Amidst this bustle, it would have been easy to overlook certain slender, 3-cm-long creatures ...
... their prey. Many animals had protective spikes or armor as well as modified mouthparts that enabled their bearers to filter food from the water. Worms slithered in the bottom muck, feeding on organic matter. Amidst this bustle, it would have been easy to overlook certain slender, 3-cm-long creatures ...
Organisms at high altitude
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Organisms can live at high altitude, either on land, or while flying. Decreased oxygen availability and decreased temperature make life at high altitude challenging. Despite these environmental conditions, many species have been successfully adapted at high altitudes. Animals have developed physiological adaptations to enhance oxygen uptake and delivery to tissues which can be used to sustain metabolism. The strategies used by animals to adapt to high altitude depend on their morphology and phylogeny.