BIOL_218_F_2008_MTX1_QA_100909.1
... 69. Adjacent cardiac muscle cells need to communicate with each other extremely quickly. Which type of cell junction would best help accomplish this? A. tight junction B. adherens junction C. desmosomes D. gap junctions 70. Adjacent cells in the stomach need to be water tight to prevent stomach acid ...
... 69. Adjacent cardiac muscle cells need to communicate with each other extremely quickly. Which type of cell junction would best help accomplish this? A. tight junction B. adherens junction C. desmosomes D. gap junctions 70. Adjacent cells in the stomach need to be water tight to prevent stomach acid ...
An Introduction to Animal Diversity
... 4 Most animals also undergo gastrulation, a rearrangement of the embryo in which one end of the embryo folds inward, expands, and eventually fills the blastocoel, producing layers of embryonic tissues: the ectoderm (outer layer) and the endoderm (inner layer). ...
... 4 Most animals also undergo gastrulation, a rearrangement of the embryo in which one end of the embryo folds inward, expands, and eventually fills the blastocoel, producing layers of embryonic tissues: the ectoderm (outer layer) and the endoderm (inner layer). ...
video slide
... • Cleavage leads to formation of a blastula • The blastula undergoes gastrulation, forming a gastrula with different layers of embryonic tissues Video: Sea Urchin Embryonic Development Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... • Cleavage leads to formation of a blastula • The blastula undergoes gastrulation, forming a gastrula with different layers of embryonic tissues Video: Sea Urchin Embryonic Development Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Slide 1 - SchoolRack
... [as] they have tissues and internal organs [as well as] the three embryonic differentiated cells: Ecto/meso/endoderm ...
... [as] they have tissues and internal organs [as well as] the three embryonic differentiated cells: Ecto/meso/endoderm ...
ARP11handout1.
... Is irregularly triangular in shape and form part of the lateral wall of the pelvis. The broad, flat, dorsal part of the ilium is called the wing.The medial portion of the wing is called as the Tuber sacral and its ventral medial aspects articulates with the the wings of the sacrum.The external porti ...
... Is irregularly triangular in shape and form part of the lateral wall of the pelvis. The broad, flat, dorsal part of the ilium is called the wing.The medial portion of the wing is called as the Tuber sacral and its ventral medial aspects articulates with the the wings of the sacrum.The external porti ...
Ontology 103 - Centre for Logic and Information
... • Recognizes, among others, continuants, processes, spatial regions, instants of time, functions, roles, etc. ...
... • Recognizes, among others, continuants, processes, spatial regions, instants of time, functions, roles, etc. ...
The Skeletal System
... with an unaided eye. There are many types of gross anatomy: • Surface anatomy is the study of general form and superficial markings • Regional anatomy focuses on the anatomical organization of specific areas of the body such as the head, neck or trunk. • Systematic anatomy is the study of the str ...
... with an unaided eye. There are many types of gross anatomy: • Surface anatomy is the study of general form and superficial markings • Regional anatomy focuses on the anatomical organization of specific areas of the body such as the head, neck or trunk. • Systematic anatomy is the study of the str ...
V Platyhelminthes and Nematoda PPT
... • Tissues organized into organs • Bilaterally symmetrical and flat • Cells lie close to exterior enabling efficient diffusion of oxygen and carbon dioxide • Highly branched gastrovascular cavity runs close to all tissues giving cells ready access to food • No respiratory or circulatory systems ...
... • Tissues organized into organs • Bilaterally symmetrical and flat • Cells lie close to exterior enabling efficient diffusion of oxygen and carbon dioxide • Highly branched gastrovascular cavity runs close to all tissues giving cells ready access to food • No respiratory or circulatory systems ...
Lecture - Tele Anatomy
... • The pouches line up with the clefts, and these thin segments become gills in fish. • In mammals the endoderm and ectoderm not only remain intact, but continue to be separated by a mesoderm layer. ...
... • The pouches line up with the clefts, and these thin segments become gills in fish. • In mammals the endoderm and ectoderm not only remain intact, but continue to be separated by a mesoderm layer. ...
The Phylogenetic Position of Entoprocta
... On the other hand, two characters indicate a sistergroup relationship of the two phyla. Their planktotrophic larvae have long, ciliated tentacles similar in structure and function to those of the adults and forming a postoral horseshoe which is almost closed near the apical organ in the area where n ...
... On the other hand, two characters indicate a sistergroup relationship of the two phyla. Their planktotrophic larvae have long, ciliated tentacles similar in structure and function to those of the adults and forming a postoral horseshoe which is almost closed near the apical organ in the area where n ...
Chapter 29 PowerPoint
... Parasitic flatworms are flukes (trematodes) and tapeworms (cestodes) Well-developed nerves and gastrovascular cavity are unnecessary ...
... Parasitic flatworms are flukes (trematodes) and tapeworms (cestodes) Well-developed nerves and gastrovascular cavity are unnecessary ...
Chapter 20 and 21 – Human Body and Digestion/Nutrition
... b. Head of sperm fuses with membrane, nucleus fuses with egg nucleus c. Other sperm are blocked by chemicals reinforcing membrane and layers outside of egg. E. Human development a. Fertilization occurs in uterine tube. Implantation occurs at 1 week (Fig. 27.15a) b. Placenta (Fig. 27.15b-f) i. Forms ...
... b. Head of sperm fuses with membrane, nucleus fuses with egg nucleus c. Other sperm are blocked by chemicals reinforcing membrane and layers outside of egg. E. Human development a. Fertilization occurs in uterine tube. Implantation occurs at 1 week (Fig. 27.15a) b. Placenta (Fig. 27.15b-f) i. Forms ...
Mark scheme
... OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of pupils of all ages and abilities. OCR qualifications include AS/A Levels, GCSEs, OCR Nationals, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in a ...
... OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of pupils of all ages and abilities. OCR qualifications include AS/A Levels, GCSEs, OCR Nationals, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in a ...
Respiratory System
... conchae bones. The ethmoid bone forms the roof of the internal nose and the hard palate, formed by the maxillary and palatine bones, forms the floor of the nasal cavity and separates the oral and nasal cavities. This large cavity within the skull, called the nasal cavity, forms most of the nose and ...
... conchae bones. The ethmoid bone forms the roof of the internal nose and the hard palate, formed by the maxillary and palatine bones, forms the floor of the nasal cavity and separates the oral and nasal cavities. This large cavity within the skull, called the nasal cavity, forms most of the nose and ...
Anatomy of Nose & P.N.S. - The Medical Post | Trusting
... • Face develops from 5 projections: frontonasal process (ectoderm over forebrain) + 2 maxillary ...
... • Face develops from 5 projections: frontonasal process (ectoderm over forebrain) + 2 maxillary ...
Unit 1 Introduction to the Human Body
... • Consists of two or more organs that work together for a common purpose • Body systems allow complex functions to be completed that affect the entire body • Body systems produce whole body movements, circulate fluids throughout the body, conduct air for gas exchange, produce and transmit impulses f ...
... • Consists of two or more organs that work together for a common purpose • Body systems allow complex functions to be completed that affect the entire body • Body systems produce whole body movements, circulate fluids throughout the body, conduct air for gas exchange, produce and transmit impulses f ...
An unusual variation in the anatomy of the uncinate
... of the nasolacrimal duct. However, another layer of thick bone was encountered just below and in a plane parallel to this osteotomy [Figure 1].The bone was hard, unlike the thin, brittle bone of ethmoid air cells. It was not lined with mucosa. A window was fashioned in this bone whereupon the nasal ...
... of the nasolacrimal duct. However, another layer of thick bone was encountered just below and in a plane parallel to this osteotomy [Figure 1].The bone was hard, unlike the thin, brittle bone of ethmoid air cells. It was not lined with mucosa. A window was fashioned in this bone whereupon the nasal ...
eustachian tube
... ADITUS AD ANTRUM- BONY PROMINENCE OF HORIZONTAL CANAL LIES ON ITS MEDIAL SIDE ...
... ADITUS AD ANTRUM- BONY PROMINENCE OF HORIZONTAL CANAL LIES ON ITS MEDIAL SIDE ...
The Female Reproductive System • Produces gametes (ova
... • Anteverted (anteflexed): usual position of uterus • Parts of the uterus: ...
... • Anteverted (anteflexed): usual position of uterus • Parts of the uterus: ...
Document
... divided into 4 parts: interstitial portion: embodied within the muscular wall of uterus isthmus: narrowest portion ampulla: wide and tortuous infundibulum: fringed by numerous diverging processes (open to cavity). ...
... divided into 4 parts: interstitial portion: embodied within the muscular wall of uterus isthmus: narrowest portion ampulla: wide and tortuous infundibulum: fringed by numerous diverging processes (open to cavity). ...
The Hydra
... round the prey and hold it tight. The tentacles the Hydra's mouth. Digested nutrients move then,_ move the prey toward the Hydra's mouth into the cells of the Hy dra by diffusion. and force it into the its digestive cavity. The Hydra spends much
... round the prey and hold it tight. The tentacles the Hydra's mouth. Digested nutrients move then,_ move the prey toward the Hydra's mouth into the cells of the Hy dra by diffusion. and force it into the its digestive cavity. The Hydra spends much
Clot Formation in the Sipunculid Worm Themiste petricola: A
... Figure 3: (a) Flow cytometry of coelomic cells. Forward light scatter (FSC) versus side light scatter (SSC) dot plot of a sample harvested in EDTA-containing saline. The cluster of LGLs is indicated by the arrow. The large cluster in lower-right position corresponds to haemerythrocytes and large hya ...
... Figure 3: (a) Flow cytometry of coelomic cells. Forward light scatter (FSC) versus side light scatter (SSC) dot plot of a sample harvested in EDTA-containing saline. The cluster of LGLs is indicated by the arrow. The large cluster in lower-right position corresponds to haemerythrocytes and large hya ...
BIO 218 F 2012 CH 21 Martini Lecture Outline
... Structure of the Heart Wall Functions of the Fibrous Skeleton Stabilizes the position of cardiac cells Stabilizes the position of the heart valves Provides support for the blood vessels and nerves in the myocardium Helps to distribute the forces of contraction Helps to prevent overexpansion of the h ...
... Structure of the Heart Wall Functions of the Fibrous Skeleton Stabilizes the position of cardiac cells Stabilizes the position of the heart valves Provides support for the blood vessels and nerves in the myocardium Helps to distribute the forces of contraction Helps to prevent overexpansion of the h ...
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.