Anatomy of The Eye
... arranged in lamellar form . The cornea doesn’t contain blood vessels; nutrients for its cells permeate from vessels in the limbus or are carried to it its surface in the lacrimal fluid and aqueous humor . ...
... arranged in lamellar form . The cornea doesn’t contain blood vessels; nutrients for its cells permeate from vessels in the limbus or are carried to it its surface in the lacrimal fluid and aqueous humor . ...
A polymorphonuclear leucocytosis in the blood is usually found in
... via the "emissary" veins, by direct extension through bone (osteomyelitis, periostitis, Gradenigo's or via the sheaths and foramina of issuing nerves. The dura may also be involved syndrome), in granulation tissue due to tuberculosis or syphilis, especially in the spinal cord. In the former conditio ...
... via the "emissary" veins, by direct extension through bone (osteomyelitis, periostitis, Gradenigo's or via the sheaths and foramina of issuing nerves. The dura may also be involved syndrome), in granulation tissue due to tuberculosis or syphilis, especially in the spinal cord. In the former conditio ...
Biology_218_Lecture_Outline_24_Respration
... - its walls have openings for ducts from the paranasal sinuses and the nasolacrimal ducts ii. Both portions of the nose contain the nasal cavity that is divided into right and left sides by the vertical nasal septum; the anterior portion of the nasal cavity, just inside the nostrils, is called the v ...
... - its walls have openings for ducts from the paranasal sinuses and the nasolacrimal ducts ii. Both portions of the nose contain the nasal cavity that is divided into right and left sides by the vertical nasal septum; the anterior portion of the nasal cavity, just inside the nostrils, is called the v ...
Nerve activates contraction
... • Sensory receptors are within large, complex sensory organs in the head • Smell in olfactory organs • Taste in taste buds • Hearing and equilibrium in ears • Sight in eyes ...
... • Sensory receptors are within large, complex sensory organs in the head • Smell in olfactory organs • Taste in taste buds • Hearing and equilibrium in ears • Sight in eyes ...
Ear Structure and Function in Modern Mammals
... bending of the "hairs" of the hair cells may well create an alternating modulation of the cndocochlear potential, which may be recorded as the cochlear microphonic. The summating potentials occurring with more intense stimulation may be caused by nonlinear characteristics of the basilar membrane whi ...
... bending of the "hairs" of the hair cells may well create an alternating modulation of the cndocochlear potential, which may be recorded as the cochlear microphonic. The summating potentials occurring with more intense stimulation may be caused by nonlinear characteristics of the basilar membrane whi ...
Chapter 17 Special Senses
... – Transparent, central anterior portion – Allows for light to pass through – The only human tissue that can be transplanted without fear of rejection ...
... – Transparent, central anterior portion – Allows for light to pass through – The only human tissue that can be transplanted without fear of rejection ...
Part b
... (k) Others: blood Description: Red and white blood cells in a fluid matrix (plasma). Plasma Function: Transport of respiratory gases, nutrients, wastes, and other substances. Location: Contained within blood vessels. ...
... (k) Others: blood Description: Red and white blood cells in a fluid matrix (plasma). Plasma Function: Transport of respiratory gases, nutrients, wastes, and other substances. Location: Contained within blood vessels. ...
Chapter 50 - Tripod.com
... substantially among individuals as does asymmetry between left and right sides in the same individual. Although the frontal sinus is usually considered a pyramidal structure in the vertical part of the frontal bone, it may appear in other forms. In some cases no invasion of the squamous part of the ...
... substantially among individuals as does asymmetry between left and right sides in the same individual. Although the frontal sinus is usually considered a pyramidal structure in the vertical part of the frontal bone, it may appear in other forms. In some cases no invasion of the squamous part of the ...
Respiratory System
... – Caused by spasms of the smooth muscles (as there is no cartilage to hold them open) – Often triggered by allergens in the environment – Read page 844844-845 Jenkins, Kemnitz & Tortora Bronchi ...
... – Caused by spasms of the smooth muscles (as there is no cartilage to hold them open) – Often triggered by allergens in the environment – Read page 844844-845 Jenkins, Kemnitz & Tortora Bronchi ...
Chapter 5 Notes from Book
... • Accomplished by specialized form of apoptosis – Controlled cellular suicide – Nucleus and organelles break down – Plasma membrane thickens – Allows cells to slough off as dandruff and dander – Shed ~ 50,000 cells every minute © 2013 Pearson Education, Inc. ...
... • Accomplished by specialized form of apoptosis – Controlled cellular suicide – Nucleus and organelles break down – Plasma membrane thickens – Allows cells to slough off as dandruff and dander – Shed ~ 50,000 cells every minute © 2013 Pearson Education, Inc. ...
Respiratory anatomy - PCC
... • Submucosa: connective tissue deep to the mucosa • Adventitia: outermost layer, has C-shaped rings of hyaline cartilage ...
... • Submucosa: connective tissue deep to the mucosa • Adventitia: outermost layer, has C-shaped rings of hyaline cartilage ...
Ch03 Lecture Part I
... • Left LGN input from right visual field (left half of each retina) • Right LGN input from right visual field (right half of each retina) ...
... • Left LGN input from right visual field (left half of each retina) • Right LGN input from right visual field (right half of each retina) ...
Periods and Stages of the Prenatal Development of the
... During the delamination phase, the gastrula is characterized by the formation of the inner endodermal layer. The gastrula is about 1.5 · 1 mm, egg-shaped, with tall cells in the embryonic shield, without visible cover (Fig. 4). The literature describes a blastocyst with zona, with endoderm formation ...
... During the delamination phase, the gastrula is characterized by the formation of the inner endodermal layer. The gastrula is about 1.5 · 1 mm, egg-shaped, with tall cells in the embryonic shield, without visible cover (Fig. 4). The literature describes a blastocyst with zona, with endoderm formation ...
hyoid bone - Shabeer Dawar
... • Orbital opening: Lies anteriorly. About one sixth of the eye is exposed; the remainder is protected by the walls of the orbit. • Supraorbital notch (Foramen):The supraorbital notch is situated on the superior orbital margin. It transmits the supraorbital nerve and blood vessels. • Infraorbital gro ...
... • Orbital opening: Lies anteriorly. About one sixth of the eye is exposed; the remainder is protected by the walls of the orbit. • Supraorbital notch (Foramen):The supraorbital notch is situated on the superior orbital margin. It transmits the supraorbital nerve and blood vessels. • Infraorbital gro ...
Extraembryonic blood vessels form during the early 3rd week
... Blood islands are first formed by proliferating yolk sac, connecting stalk, and chorion. These unite to form plexi of capillaries, some of which enlarge forming extraembryonic veins and arteries. Embryonic blood islands are formed by proliferation of visceral (splanchnic) mesoderm during mid-3rd wee ...
... Blood islands are first formed by proliferating yolk sac, connecting stalk, and chorion. These unite to form plexi of capillaries, some of which enlarge forming extraembryonic veins and arteries. Embryonic blood islands are formed by proliferation of visceral (splanchnic) mesoderm during mid-3rd wee ...
Anatomy of Nose and Paranasal Sinus
... The Paranasal Sinuses • The paranasal sinuses are cavities found in the interior of the maxilla, frontal, sphenoid, and ethmoid bones . • They are lined with mucoperiosteum and ...
... The Paranasal Sinuses • The paranasal sinuses are cavities found in the interior of the maxilla, frontal, sphenoid, and ethmoid bones . • They are lined with mucoperiosteum and ...
Chapter 10: Circulatory System and Lymphatic
... into lobules, which are filled with T cells and supporting cells • Lobules are lined with epithelial cells that secrete hormones called thymosins, which are involved in the differentiation of T cells • T cells that react to the body’s own cells undergo apoptosis (programmed cell death) • T cells tha ...
... into lobules, which are filled with T cells and supporting cells • Lobules are lined with epithelial cells that secrete hormones called thymosins, which are involved in the differentiation of T cells • T cells that react to the body’s own cells undergo apoptosis (programmed cell death) • T cells tha ...
Chapter 10: Circulatory System and Lymphatic
... into lobules, which are filled with T cells and supporting cells • Lobules are lined with epithelial cells that secrete hormones called thymosins, which are involved in the differentiation of T cells • T cells that react to the body’s own cells undergo apoptosis (programmed cell death) • T cells tha ...
... into lobules, which are filled with T cells and supporting cells • Lobules are lined with epithelial cells that secrete hormones called thymosins, which are involved in the differentiation of T cells • T cells that react to the body’s own cells undergo apoptosis (programmed cell death) • T cells tha ...
THE NEUROLOGIC EXAMINATION Ralph F
... an infolding of the dural called the tentorium cerebelli. The cerebellum overlies the dorsal aspects of the medulla and pons and contributes to the roof of the fourth ventricle. It constitutes about 10% of the weight of the brain. It consists of a midline vermis and two lateral hemispheres. From the ...
... an infolding of the dural called the tentorium cerebelli. The cerebellum overlies the dorsal aspects of the medulla and pons and contributes to the roof of the fourth ventricle. It constitutes about 10% of the weight of the brain. It consists of a midline vermis and two lateral hemispheres. From the ...
The Ear, Moore 4th ed
... nodes, and the medial surface of the upper part goes to the mastoid and deep cervical nodes. The lobule drains to the superficial cervical lymph nodes. External Acoustic Meatus is the opening that goes inward to the inner parts of the ear. It continues through the tympanic part of the temporal bone, ...
... nodes, and the medial surface of the upper part goes to the mastoid and deep cervical nodes. The lobule drains to the superficial cervical lymph nodes. External Acoustic Meatus is the opening that goes inward to the inner parts of the ear. It continues through the tympanic part of the temporal bone, ...
P. Arthropoda
... Endoderm – Innermost “germ layer”; differentiates into some of the internal tissues and the lining of most hollow organs, if these are present Mesoderm – Middle “germ layer”; differentiates into muscles, circulatory and skeletal systems, and sex organs, if these are present Ectoderm – Outermost “ger ...
... Endoderm – Innermost “germ layer”; differentiates into some of the internal tissues and the lining of most hollow organs, if these are present Mesoderm – Middle “germ layer”; differentiates into muscles, circulatory and skeletal systems, and sex organs, if these are present Ectoderm – Outermost “ger ...
4. Skeletal Muscle Cell Structure
... contains hundreds to thousands of Myofibrils. These are bundles of Actin and Myosin proteins which run the length of the muscle fiber and are important in muscle contraction. Surrounding the Myofibril there is a network of tubules and channels called the Sarcoplasmic Reticulum in which Calcium is st ...
... contains hundreds to thousands of Myofibrils. These are bundles of Actin and Myosin proteins which run the length of the muscle fiber and are important in muscle contraction. Surrounding the Myofibril there is a network of tubules and channels called the Sarcoplasmic Reticulum in which Calcium is st ...
the leaf structure of some nepenthes danser
... homogenous parenchyma, formed of big, turgescent cells and a few idioblasts. Near the pitcher, the cross section of the tendril is quite circular. The vascular bundles form 2-3 rings (the internal bundles are bigger than the external ones, in the fundamental parenchyma). A sclerenchymatic sheath sur ...
... homogenous parenchyma, formed of big, turgescent cells and a few idioblasts. Near the pitcher, the cross section of the tendril is quite circular. The vascular bundles form 2-3 rings (the internal bundles are bigger than the external ones, in the fundamental parenchyma). A sclerenchymatic sheath sur ...
Cells - busadmin
... Connective tissue - this tissue works, as its name suggests, supporting body structures and connecting to other tissues. Connective tissue includes fat tissue, and bone tissue. Epithelial tissue - this tissue makes up our skin and also forms a protective lining in organs such as the stomach. Muscle ...
... Connective tissue - this tissue works, as its name suggests, supporting body structures and connecting to other tissues. Connective tissue includes fat tissue, and bone tissue. Epithelial tissue - this tissue makes up our skin and also forms a protective lining in organs such as the stomach. Muscle ...
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.