MALE GENITAL SYSTEM (yahya).
... (it should disappear in males ) Cause: failure of development of testes & absence of müllerian inhibiting ...
... (it should disappear in males ) Cause: failure of development of testes & absence of müllerian inhibiting ...
Slide 1
... image on the right was obtained using an endoscope. The X ray exposes the patient to radiation. The endoscope does not. ...
... image on the right was obtained using an endoscope. The X ray exposes the patient to radiation. The endoscope does not. ...
Eye - iupui
... vomerolfaction – thought to be only transiently present during embryogenesis in humans d. vision (sight) e. hearing (sound) f. balance g. electroreception – lost a long time ago in humans but still retained by many mammals (e.g., platypus) Vision is the perception of light and the formation of image ...
... vomerolfaction – thought to be only transiently present during embryogenesis in humans d. vision (sight) e. hearing (sound) f. balance g. electroreception – lost a long time ago in humans but still retained by many mammals (e.g., platypus) Vision is the perception of light and the formation of image ...
Brief Introduction to the Individuals in the Course of Basic Medical
... In animals, the blastula develops in one of two ways that divides the whole animal kingdom into two halves. If in the blastula the first pore (blastopore) becomes the mouth of the animal, it is a protostome; if the first pore becomes the anus then it is a deuterostome. The protostomes include most i ...
... In animals, the blastula develops in one of two ways that divides the whole animal kingdom into two halves. If in the blastula the first pore (blastopore) becomes the mouth of the animal, it is a protostome; if the first pore becomes the anus then it is a deuterostome. The protostomes include most i ...
Anatomy of the nose
... A midline structure extending from the skull base to the hard palate. Divided by the nasal septum into two nearly symmetrical cavities. Extending from the anterior nares till the choana (nasopharynx) ...
... A midline structure extending from the skull base to the hard palate. Divided by the nasal septum into two nearly symmetrical cavities. Extending from the anterior nares till the choana (nasopharynx) ...
8.3 - Pattern in Nature
... ER is involved in protein synthesis. Smooth ER has no ribosomes and is involved in lipid manufacture and inactivation of drugs ...
... ER is involved in protein synthesis. Smooth ER has no ribosomes and is involved in lipid manufacture and inactivation of drugs ...
Phylum Cnidaria - Mr. G's Educational Emporium
... Endoderm/Gastrodermis – lines the gut Mesoglea – Jelly like substance in between the Ectoderm and Endoderm which contains scattered cells and collagen fibers ...
... Endoderm/Gastrodermis – lines the gut Mesoglea – Jelly like substance in between the Ectoderm and Endoderm which contains scattered cells and collagen fibers ...
Cell Structure
... initially remain together. The act of replication occurs during ‘S’ (synthesis) phase which punctuates interphase, the period between successive acts of mitosis. Replication of chromosomes is actually replication of the DNA double helix which occurs at a ‘replication fork’, involving a host of differ ...
... initially remain together. The act of replication occurs during ‘S’ (synthesis) phase which punctuates interphase, the period between successive acts of mitosis. Replication of chromosomes is actually replication of the DNA double helix which occurs at a ‘replication fork’, involving a host of differ ...
Biology 1409 Exam 1 Notes
... - specialized stinging cells called cnidocytes - 2 distinct body forms: attached polyp and free-floating medusa - coral polyps secrete calcium carbonate (limestone) skeletons - build reefs, form symbiotic relationship with algae ...
... - specialized stinging cells called cnidocytes - 2 distinct body forms: attached polyp and free-floating medusa - coral polyps secrete calcium carbonate (limestone) skeletons - build reefs, form symbiotic relationship with algae ...
bio 12 8.1 TISSUES
... where each could be found in the human body. 2. Describe the structure and function of skeletal, smooth, and cardiac muscle. 3. Name the three parts of a neuron, and define nerve ...
... where each could be found in the human body. 2. Describe the structure and function of skeletal, smooth, and cardiac muscle. 3. Name the three parts of a neuron, and define nerve ...
File - Sheffield Peer Teaching Society
... • HYPOBLAST: cells migrate and form the exocoelomic membrane (forms the extraembryonic cavity and secondary yolk sac) THEN…. Gastrulation occurs (around 3rd week) • TRILAMINAR DISC (consists of ecto-, meso-, and endoderm) • First signs also include primitive streak and node forming on the epliblast ...
... • HYPOBLAST: cells migrate and form the exocoelomic membrane (forms the extraembryonic cavity and secondary yolk sac) THEN…. Gastrulation occurs (around 3rd week) • TRILAMINAR DISC (consists of ecto-, meso-, and endoderm) • First signs also include primitive streak and node forming on the epliblast ...
Introduction
... flatworms have no circulatory system or heart, body fluids percolate through these irregular interior spaces to bring nutrients and oxygen to the cells and to remove wastes from them. The body fluids are moved in part by muscular contractions. This type of organization without a central body cavity ...
... flatworms have no circulatory system or heart, body fluids percolate through these irregular interior spaces to bring nutrients and oxygen to the cells and to remove wastes from them. The body fluids are moved in part by muscular contractions. This type of organization without a central body cavity ...
Unit 2 – Multicellular Organisms
... Gametes only have a single set of chromosomes that cannot be arranged into pairs. These are known as haploid cells. The fusing of two gametes ensures that the offspring produced contains the correct number of chromosomes (46 chromosomes). ...
... Gametes only have a single set of chromosomes that cannot be arranged into pairs. These are known as haploid cells. The fusing of two gametes ensures that the offspring produced contains the correct number of chromosomes (46 chromosomes). ...
Document
... 13. Birds are _____. a. always able to fly b. descended from reptiles c. sometimes flightless d. both b and c e. both a and b 24. Which of the following is false regarding mitosis and meiosis? a. Mitosis produces daughter cells with the same ploidy level whereas meiosis produces daughter cells with ...
... 13. Birds are _____. a. always able to fly b. descended from reptiles c. sometimes flightless d. both b and c e. both a and b 24. Which of the following is false regarding mitosis and meiosis? a. Mitosis produces daughter cells with the same ploidy level whereas meiosis produces daughter cells with ...
Document
... 13. Birds are _____. a. always able to fly b. descended from reptiles c. sometimes flightless d. both b and c e. both a and b 24. Which of the following is false regarding mitosis and meiosis? a. Mitosis produces daughter cells with the same ploidy level whereas meiosis produces daughter cells with ...
... 13. Birds are _____. a. always able to fly b. descended from reptiles c. sometimes flightless d. both b and c e. both a and b 24. Which of the following is false regarding mitosis and meiosis? a. Mitosis produces daughter cells with the same ploidy level whereas meiosis produces daughter cells with ...
Characteristics of Living Things (Essay
... Chapt 5 Tissue Level of Organization The four types? An example of where each type would be found. ...
... Chapt 5 Tissue Level of Organization The four types? An example of where each type would be found. ...
Ear - iupui
... maculae (one utricular, one saccular). These receptors detect rotational and linear acceleration as well as gravity and are used to maintain equilibrium. The auditory portion contains a single neuroepithelial sensory receptor, the spiral organ. The auditory portion in humans has two adnexa (look it ...
... maculae (one utricular, one saccular). These receptors detect rotational and linear acceleration as well as gravity and are used to maintain equilibrium. The auditory portion contains a single neuroepithelial sensory receptor, the spiral organ. The auditory portion in humans has two adnexa (look it ...
Respiration and Respiratory System
... Each gas is diffusing from an area of high concentration to an area of low concentration ...
... Each gas is diffusing from an area of high concentration to an area of low concentration ...
Lesson 7 Immune System
... 8. Cilia in the windpipe are always moving towards (the lungs, or the mouth and nose) Secondary Defence System When germs, bacteria, and other disease-causing organisms break through the first barrier or line of defence, your secondary defence system goes into action. In the case of a cut, white blo ...
... 8. Cilia in the windpipe are always moving towards (the lungs, or the mouth and nose) Secondary Defence System When germs, bacteria, and other disease-causing organisms break through the first barrier or line of defence, your secondary defence system goes into action. In the case of a cut, white blo ...
MAMMALS - Fox Valley Lutheran High School
... Oviparous: female lays eggs and incubated outside mom’s body, but after the young hatch, mom feeds milk produced by mammary glands Marsupials are viviparous and bear live young. But yolk sac inside mom isn’t enough to nourish through development, so young are born very premature and must finish deve ...
... Oviparous: female lays eggs and incubated outside mom’s body, but after the young hatch, mom feeds milk produced by mammary glands Marsupials are viviparous and bear live young. But yolk sac inside mom isn’t enough to nourish through development, so young are born very premature and must finish deve ...
Ch 10 Notes - Mitosis
... signal that would regulate the cell cycle – something that would tell cells when it was time to divide, replicate their chromosomes, or enter another phase of the cell cycle. • In the 1980’s, a protein was discovered that when injected, would cause a nondividing cell to form a mitotic spindle. • The ...
... signal that would regulate the cell cycle – something that would tell cells when it was time to divide, replicate their chromosomes, or enter another phase of the cell cycle. • In the 1980’s, a protein was discovered that when injected, would cause a nondividing cell to form a mitotic spindle. • The ...
Reproductive System Anatomy of Male Reproductive System
... cervix = lower portion that extends into the vagina receives egg from oviduct ‡if fertilized, holds embryo and fetus during development 3 layers: perimetrium (=visceral peritoneum) ‡ serous tissue myometrium ‡ muscle layers endometrium ‡ inner mucous lining 8 ligaments hold uterus in place 6 are mai ...
... cervix = lower portion that extends into the vagina receives egg from oviduct ‡if fertilized, holds embryo and fetus during development 3 layers: perimetrium (=visceral peritoneum) ‡ serous tissue myometrium ‡ muscle layers endometrium ‡ inner mucous lining 8 ligaments hold uterus in place 6 are mai ...
22 THE ANIMAL BODY AND HOW IT MOVES
... begins as a hollow ball of cells and that the blastopore becomes the anus, and they differ in the manner that the embryo grows. Deuterostomes do not undergo determinate cleavage. protostomes (p. 532) Protostomes evolved before deuterostomes, undergo spiral cleavage, the blastopore becomes the mouth ...
... begins as a hollow ball of cells and that the blastopore becomes the anus, and they differ in the manner that the embryo grows. Deuterostomes do not undergo determinate cleavage. protostomes (p. 532) Protostomes evolved before deuterostomes, undergo spiral cleavage, the blastopore becomes the mouth ...
Unit 5: Animals – Sponges, Cnidarians, & Worms
... c. Describe the fossil record of the animals including discussing the Cambrian Explosion and major extinction events. SZ3. Students will compare form and function relationships within animal groups (clades) and across key taxa. a. Explain the similarities and differences among major body plans (e.g. ...
... c. Describe the fossil record of the animals including discussing the Cambrian Explosion and major extinction events. SZ3. Students will compare form and function relationships within animal groups (clades) and across key taxa. a. Explain the similarities and differences among major body plans (e.g. ...
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.