Lymphatic System PPT
... capillaries for excretion Since the lymphatic system has no pump, skeletal muscle action squeezes lymph along Valves prevent backward flow ...
... capillaries for excretion Since the lymphatic system has no pump, skeletal muscle action squeezes lymph along Valves prevent backward flow ...
Lecture 11: Development of head and face. Palate. Skull.
... License Creative Commons - http://creativecommons.org/licenses/by-nc-nd/3.0/ ...
... License Creative Commons - http://creativecommons.org/licenses/by-nc-nd/3.0/ ...
Chapter 2 SEM II Phylum Chordata Phylum chordate includes
... 8. Cephalization: Few of the anterior segments are fused and gets differentiated to form head bearing mouth, brain and sense organs. 9. Appendages: Appendages are unpaired in lower chordates, both paired and unpaired in fishes and only paired in tetrapods. Some tetrapods show presence of tail as ba ...
... 8. Cephalization: Few of the anterior segments are fused and gets differentiated to form head bearing mouth, brain and sense organs. 9. Appendages: Appendages are unpaired in lower chordates, both paired and unpaired in fishes and only paired in tetrapods. Some tetrapods show presence of tail as ba ...
EXERCISE #2: Respiratory division anatomy
... week. First, we must exchange the CO2-rich/ O2-depleted gases in our lungs with O2-rich/ CO2depleted air from the external atmosphere (pulmonary ventilation). Second, there must be an exchange of gases between the gases in our lungs and those gases in the blood (alveolar gas exchange). Third, these ...
... week. First, we must exchange the CO2-rich/ O2-depleted gases in our lungs with O2-rich/ CO2depleted air from the external atmosphere (pulmonary ventilation). Second, there must be an exchange of gases between the gases in our lungs and those gases in the blood (alveolar gas exchange). Third, these ...
ENDODERMAL DERIVATIVES, FORMATION OF THE GUT AND ITS
... embryologists searching for a homey figure of speech) to that of a fish. Out of these elaborate processes of folding comes the primordial bowel. In essence the head, tail and lateral folds incorporate the dorsal part of the yolk sac into the embryo to form a bowel. The meeting and resulting fusion o ...
... embryologists searching for a homey figure of speech) to that of a fish. Out of these elaborate processes of folding comes the primordial bowel. In essence the head, tail and lateral folds incorporate the dorsal part of the yolk sac into the embryo to form a bowel. The meeting and resulting fusion o ...
Coelomates
... Three lines of evidence that choanoflagellates are closely related to animals. 1. Morphologically, choanoflagellate cells and the collar cells (or choanocytes) of sponges are almost indistinguishable. 2. Similar collar cells have been identified in other animals, including cnidarians, flatworms, and ...
... Three lines of evidence that choanoflagellates are closely related to animals. 1. Morphologically, choanoflagellate cells and the collar cells (or choanocytes) of sponges are almost indistinguishable. 2. Similar collar cells have been identified in other animals, including cnidarians, flatworms, and ...
4 - Dr. Jerry Cronin
... Figure 4.12. Tissue repair of a nonextensive skin wound: regeneration and fibrosis. ...
... Figure 4.12. Tissue repair of a nonextensive skin wound: regeneration and fibrosis. ...
ductus venosus
... 6. Some blood will enter the right ventricle from the right atrium and into the pulmonary trunk. From this point most of this blood will be shunted away from the pulmonary trunk and into the aorta via which fetal structure? Name the adult remnant of this structure. o Ductus arteriosus which becomes ...
... 6. Some blood will enter the right ventricle from the right atrium and into the pulmonary trunk. From this point most of this blood will be shunted away from the pulmonary trunk and into the aorta via which fetal structure? Name the adult remnant of this structure. o Ductus arteriosus which becomes ...
BIOL 218 F 2011 Lecture Outline Ch 21
... Ions move directly from one cell to another allowing all the sarcomeres to contract as one unit ...
... Ions move directly from one cell to another allowing all the sarcomeres to contract as one unit ...
Biology lecture # 1 Levels of Life (From Atom to Biosphere)
... Molecules make organelles. Organelles are sub-cellular structures, assemble together to make cells – the units of life, e.g., mitochondria, lysosomes, Golgi bodies, nucleus. For example, mitochondria of a cell (Singular: mitochondrion) is called “powerhouse” of the cell. This organelle is present in ...
... Molecules make organelles. Organelles are sub-cellular structures, assemble together to make cells – the units of life, e.g., mitochondria, lysosomes, Golgi bodies, nucleus. For example, mitochondria of a cell (Singular: mitochondrion) is called “powerhouse” of the cell. This organelle is present in ...
Human Regulation and Reproduction
... movements occur both in front of and behind the action potential. The effect is that the membrane in front of the action potential is depolarised sufficiently to cause the sodium ion channels to open. The sodium ion channels behind the action potential cannot open due to the refractory period of the ...
... movements occur both in front of and behind the action potential. The effect is that the membrane in front of the action potential is depolarised sufficiently to cause the sodium ion channels to open. The sodium ion channels behind the action potential cannot open due to the refractory period of the ...
Chapter 24 - Bellbrook
... as shown in Figure 24.5. During these early stages of development, the number of cells increases, but the total amount of cytoplasm in the embryo remains the same as that in the original cell. Therefore, the total size of the embryo does not increase during early development. In animals such as lanc ...
... as shown in Figure 24.5. During these early stages of development, the number of cells increases, but the total amount of cytoplasm in the embryo remains the same as that in the original cell. Therefore, the total size of the embryo does not increase during early development. In animals such as lanc ...
Persistent primitive dorsal ophthalmic artery associated with
... cerebral arterial vasculature of an embryo/fetus at 4-mm ...
... cerebral arterial vasculature of an embryo/fetus at 4-mm ...
Development and Functional Anatomy of the Spine
... promoting flexion, extension, lateral flexion, and rotation at the cervical facet joints. This region also includes two highly derived elements, the C1 and C2 vertebrae. The C1 vertebra, or atlas, lacks a body and spinous process. Instead, it features two lateral masses united by an anterior and a p ...
... promoting flexion, extension, lateral flexion, and rotation at the cervical facet joints. This region also includes two highly derived elements, the C1 and C2 vertebrae. The C1 vertebra, or atlas, lacks a body and spinous process. Instead, it features two lateral masses united by an anterior and a p ...
Body Planes, Directions, & Cavities
... Orbital cavity (eyes) Nasal cavity (nose) Buccal cavity (mouth) ...
... Orbital cavity (eyes) Nasal cavity (nose) Buccal cavity (mouth) ...
PDF
... of the indecisive word 'overgrowth' the present writer suggests the more exact term 'hypermorphosis' should be used for this malformation. Patten described it in the following way: 'the neural tube epithelium had started to grow wildly so that it became folded, and refolded on itself, as if it was c ...
... of the indecisive word 'overgrowth' the present writer suggests the more exact term 'hypermorphosis' should be used for this malformation. Patten described it in the following way: 'the neural tube epithelium had started to grow wildly so that it became folded, and refolded on itself, as if it was c ...
Platyhelminthes - Formatted
... canal is the parenchymatous tissue which are loose connective-tissue cells that act as a packing material. Its fluid filled spaces provide turgidity to maintain the body form. It contains free wandering amoeboid cells that remain in the formative state. These formative cells bring about regeneration ...
... canal is the parenchymatous tissue which are loose connective-tissue cells that act as a packing material. Its fluid filled spaces provide turgidity to maintain the body form. It contains free wandering amoeboid cells that remain in the formative state. These formative cells bring about regeneration ...
L1-Nose, Nasal cavity & Paranasal sinuses & Pharynx 2014
... Nose Nose, is the only visible part of the respiratory system and serves as the entrance to the respiratory tract The nose has two cavities, separated from one another by a wall called the septum. The external openings, known as external (anterior) nares or nostrils, lead to the nasal cavitie ...
... Nose Nose, is the only visible part of the respiratory system and serves as the entrance to the respiratory tract The nose has two cavities, separated from one another by a wall called the septum. The external openings, known as external (anterior) nares or nostrils, lead to the nasal cavitie ...
Lymph nodes
... vessels drain interstitial fluid (cells and large macromolecules) from tissues to venous blood. They begin as "porous" blind-ended lymphatic capillaries in tissues of the body and converge to form a number of larger vessels, which ultimately connect with large veins in the root of the neck. ...
... vessels drain interstitial fluid (cells and large macromolecules) from tissues to venous blood. They begin as "porous" blind-ended lymphatic capillaries in tissues of the body and converge to form a number of larger vessels, which ultimately connect with large veins in the root of the neck. ...
Gross Morphology of the Endocrine Glands
... coming from the internal carotid artery, we call them superior because they go superior to the pituitary (they actually go to the hypothalamus), and in the hypothalamus they will form the first capillary network, we call it the first hypophyseal plexus, in this plexus the blood will drain from the h ...
... coming from the internal carotid artery, we call them superior because they go superior to the pituitary (they actually go to the hypothalamus), and in the hypothalamus they will form the first capillary network, we call it the first hypophyseal plexus, in this plexus the blood will drain from the h ...
![[edit] Reproduction](http://s1.studyres.com/store/data/000858527_1-876c86f9daab84dc075a09e27c869200-300x300.png)
[edit] Reproduction
... spermatozoon and an egg, which occurs through fusion of their plasma membranes. After a spermatozoon comes in contact with an egg, the acrosome, which is a prominence at the anterior tip of the spermatozoa, undergoes a series of well-defined structural changes. A structure within the acrosome, calle ...
... spermatozoon and an egg, which occurs through fusion of their plasma membranes. After a spermatozoon comes in contact with an egg, the acrosome, which is a prominence at the anterior tip of the spermatozoa, undergoes a series of well-defined structural changes. A structure within the acrosome, calle ...
Connective Tissue
... Figure 4.12. Tissue repair of a nonextensive skin wound: regeneration and fibrosis. ...
... Figure 4.12. Tissue repair of a nonextensive skin wound: regeneration and fibrosis. ...
Neuroanatomy Laboratory
... Excitatory and inhibitory interneurons within the cerebellar cortex modulate the incoming excitatory information to determine which Purkinje cells fire and for how long. Purkinje cells send their axons to the deep cerebellar nuclei and to the vestibular nuclei, where they inhibit the ongoing activit ...
... Excitatory and inhibitory interneurons within the cerebellar cortex modulate the incoming excitatory information to determine which Purkinje cells fire and for how long. Purkinje cells send their axons to the deep cerebellar nuclei and to the vestibular nuclei, where they inhibit the ongoing activit ...
Outline 18
... Testosterone stimulates the growth of the cartilage, so it is larger in ______________ The cricoid cartilage is inferior to the thyroid cartilage o It’s ring-like in construction and connects the larynx to the ___________________ The arytenoid cartilages are posterior to the thyroid cartilage ...
... Testosterone stimulates the growth of the cartilage, so it is larger in ______________ The cricoid cartilage is inferior to the thyroid cartilage o It’s ring-like in construction and connects the larynx to the ___________________ The arytenoid cartilages are posterior to the thyroid cartilage ...
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.