The heart develops from mesoderm
... As the heart tube enlarges, it forms 4 primordia: the sinus venosus, common atrium, embryonic ventricle and bulbus cordis. These primordia are parts of the heart tube that have enlarged more than the other parts in between them so that they appear as heart vesicles. The sinus venosus, common atrium ...
... As the heart tube enlarges, it forms 4 primordia: the sinus venosus, common atrium, embryonic ventricle and bulbus cordis. These primordia are parts of the heart tube that have enlarged more than the other parts in between them so that they appear as heart vesicles. The sinus venosus, common atrium ...
The Circulatory System
... When your heart beats it pushes blood out of the right ventricle to the lungs. The bloods cells that are carried to the lungs release carbon dioxide and gain oxygen so that when you breath in you inhale oxygen and when you exhale your lungs release carbon dioxide. Then the red blood cells take oxyge ...
... When your heart beats it pushes blood out of the right ventricle to the lungs. The bloods cells that are carried to the lungs release carbon dioxide and gain oxygen so that when you breath in you inhale oxygen and when you exhale your lungs release carbon dioxide. Then the red blood cells take oxyge ...
Cells to Body Systems
... The digestive system breaks down food into chemical nutrients that our body needs for food, energy, and repair. Nutrients are absorbed into the blood once digestion is complete. Begins in the mouth Major organs: stomach, small /large intestines, esophagus (tube from mouth to stomach) ...
... The digestive system breaks down food into chemical nutrients that our body needs for food, energy, and repair. Nutrients are absorbed into the blood once digestion is complete. Begins in the mouth Major organs: stomach, small /large intestines, esophagus (tube from mouth to stomach) ...
Embryogenesis Handout Part 2
... one of three serous cavities which develops in the embryo/fetus. Septum Transversum thick mass of cranial mesenchyme which gives rise to parts of the thoracic diaphragm and the separates the intraembryonic coelom into thoracic and abdominal cavities. Cardiac anlage the initial clustering of embryoni ...
... one of three serous cavities which develops in the embryo/fetus. Septum Transversum thick mass of cranial mesenchyme which gives rise to parts of the thoracic diaphragm and the separates the intraembryonic coelom into thoracic and abdominal cavities. Cardiac anlage the initial clustering of embryoni ...
DEVELOPMENT OF HUMAN BRAIN AND SPINAL CORD
... The origins of nervous system Primary and secondary brain vesicles Development of spinal cord Development of brain stem Development of cerebral hemispheres ORIGIN OF NERVOUS SYSTEM The nervous system develops from the neural plate, a thickened slipper shaped area of ectoderm. The neural plate forms ...
... The origins of nervous system Primary and secondary brain vesicles Development of spinal cord Development of brain stem Development of cerebral hemispheres ORIGIN OF NERVOUS SYSTEM The nervous system develops from the neural plate, a thickened slipper shaped area of ectoderm. The neural plate forms ...
EMBRYOLOGY GASTROINTESTINAL DEVELOPMENT G.I.T
... The oral cavity (mouth) is formed following breakdown of the buccopharyngeal membrane (= oropharyngeal or oral) and the opening means that it contains amniotic fluid, which is also swallowed later in development. The large mid-gut is generated by lateral embryonic folding which "pinches off" a pocke ...
... The oral cavity (mouth) is formed following breakdown of the buccopharyngeal membrane (= oropharyngeal or oral) and the opening means that it contains amniotic fluid, which is also swallowed later in development. The large mid-gut is generated by lateral embryonic folding which "pinches off" a pocke ...
“true” coelom
... If you remove cells from or split the blastula in an early _____________ embryo, the resulting organism will be missing body parts and will not survive. ...
... If you remove cells from or split the blastula in an early _____________ embryo, the resulting organism will be missing body parts and will not survive. ...
Ch 15 Notes
... • Resistance to most plant and animal pathogens • Resistance due to physiological processes of humans that are incompatible with those of the pathogen (species resistance) – Correct chemical receptors not present on human cells – Temperature and pH may be incompatible with those necessary for the pa ...
... • Resistance to most plant and animal pathogens • Resistance due to physiological processes of humans that are incompatible with those of the pathogen (species resistance) – Correct chemical receptors not present on human cells – Temperature and pH may be incompatible with those necessary for the pa ...
Chapter 28 PowerPoint
... – Water circulates in body – Food trapped on sticky collars of choanocytes – Food digested in collar or amoeboid cell – Undigested – out to water through osculum ...
... – Water circulates in body – Food trapped on sticky collars of choanocytes – Food digested in collar or amoeboid cell – Undigested – out to water through osculum ...
Phylum Cnidaria - Jellyfish - about 9,000 species, all aquatic, and
... the opening to the outside (easy to see how one can get from a “gastrula” to a Cnidarian). - there is only one opening, so this functions as mouth and anus. Prey is caught with the tentacles, moved into the gut, digested, and then the remains are expelled. - two main forms [Fig. 33.5, p. 671]: polyp ...
... the opening to the outside (easy to see how one can get from a “gastrula” to a Cnidarian). - there is only one opening, so this functions as mouth and anus. Prey is caught with the tentacles, moved into the gut, digested, and then the remains are expelled. - two main forms [Fig. 33.5, p. 671]: polyp ...
Define: Cell, Tissue, organ, and organ system
... The male and female reproductive systems are responsible for the production of sperm and ova (eggs), the fertilisation of ova by sperm, and the gestation of a fertilised ova into a foetus (unborn baby) ...
... The male and female reproductive systems are responsible for the production of sperm and ova (eggs), the fertilisation of ova by sperm, and the gestation of a fertilised ova into a foetus (unborn baby) ...
Introduction to Animal Diversity
... Animals can be categorized according to the symmetry of their bodies or lack of it. Symmetry Reflects Lifestyle Radial animals are sessile or planktonic Bilaterial animals more actively from one place to another The nervous system enables these organisms to move. ...
... Animals can be categorized according to the symmetry of their bodies or lack of it. Symmetry Reflects Lifestyle Radial animals are sessile or planktonic Bilaterial animals more actively from one place to another The nervous system enables these organisms to move. ...
Midterm Review: Living Environment Enzymes
... – Digestive system breaks down food (glucose) into nutrients. In the intestines, nutrients are absorbed into the blood and the circulatory system transports nutrients to cells to be used for cellular respiration • Digestive and Respiratory – Respiratory brings in oxygen and digestive system breaks d ...
... – Digestive system breaks down food (glucose) into nutrients. In the intestines, nutrients are absorbed into the blood and the circulatory system transports nutrients to cells to be used for cellular respiration • Digestive and Respiratory – Respiratory brings in oxygen and digestive system breaks d ...
Organization and Regulation of Human Body Systems Circulatory, Respiratory, Immune, Integumentary
... Volume of the thoracic cavity and lungs increase The air pressure within the lungs decrease Air flows out of the lungs ...
... Volume of the thoracic cavity and lungs increase The air pressure within the lungs decrease Air flows out of the lungs ...
Document
... Establishing the Polarity of the Embryo Fertilization of the egg triggers the production of Bicoid protein from maternal RN A in the egg. The Bicoid protein diffuses through the egg, forming a gradient. This gradient determines the polarity of the embryo, with the head and thorax developing in the z ...
... Establishing the Polarity of the Embryo Fertilization of the egg triggers the production of Bicoid protein from maternal RN A in the egg. The Bicoid protein diffuses through the egg, forming a gradient. This gradient determines the polarity of the embryo, with the head and thorax developing in the z ...
Strand A - Life Processes and Living Things
... Nucleus: surrounded by nuclear membrane, contains genetic material, divides for reproduction Cytoplasm contains organelles, small structure that carry out the chemical activities of the cell, including mitochondria (which produce the cell’s energy) and vacuoles (which store food, water, or waste ...
... Nucleus: surrounded by nuclear membrane, contains genetic material, divides for reproduction Cytoplasm contains organelles, small structure that carry out the chemical activities of the cell, including mitochondria (which produce the cell’s energy) and vacuoles (which store food, water, or waste ...
Chapter 23: Plant Tissues & Systems
... The cells that surround sieve tube elements are called companion cells. Companion cells keep their nuclei and other organelles through their ...
... The cells that surround sieve tube elements are called companion cells. Companion cells keep their nuclei and other organelles through their ...
Document
... In Drosophila melanogaster (fruit flies), red eye color (R) is dominant over brown eye color (r). If the flies in the picture were crossed, what percent of their offspring would be expected to have brown eyes? Record and bubble in your answer on the answer document. ...
... In Drosophila melanogaster (fruit flies), red eye color (R) is dominant over brown eye color (r). If the flies in the picture were crossed, what percent of their offspring would be expected to have brown eyes? Record and bubble in your answer on the answer document. ...
text - Systems Neuroscience Course, MEDS 371, Univ. Conn. Health
... The auditory space map of the barn owl exhibits prominent plasticity where the visual system provides an instructive learning. Descending auditory pathways SOC -> CN, cochlea medial olivocochlear (MOC) neurons to the outer hair cells (mediating gain control of the cochlear amplifier); lateral olivoc ...
... The auditory space map of the barn owl exhibits prominent plasticity where the visual system provides an instructive learning. Descending auditory pathways SOC -> CN, cochlea medial olivocochlear (MOC) neurons to the outer hair cells (mediating gain control of the cochlear amplifier); lateral olivoc ...
Levels of Organization - Ms. Pollei`s Science 7
... many systems in the human body, as well as in many other organisms. It is made up of the heart and blood vessels. Function: the circulatory system transports oxygen and food to all cells in the body through the blood ...
... many systems in the human body, as well as in many other organisms. It is made up of the heart and blood vessels. Function: the circulatory system transports oxygen and food to all cells in the body through the blood ...
Respiration
... How does O2 get into the blood? • Lungs are mostly a collection of tiny hollow sacs called alveoli, and they are surrounded by tiny blood vessels called capillaries • As you inhale, the alveoli fill up with air, which contains O2 • Because there is more O2 in the lungs than in the blood, O2 diffuse ...
... How does O2 get into the blood? • Lungs are mostly a collection of tiny hollow sacs called alveoli, and they are surrounded by tiny blood vessels called capillaries • As you inhale, the alveoli fill up with air, which contains O2 • Because there is more O2 in the lungs than in the blood, O2 diffuse ...
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.