The Insect Gas Exchange System
... with chitin on the sides of its body. • The chitin give shape to the openings. • The spiracles can open and close by small ...
... with chitin on the sides of its body. • The chitin give shape to the openings. • The spiracles can open and close by small ...
red blood cells
... most other developed nations • More than half the deaths in the United States are caused by cardiovascular diseases, diseases of the heart and blood vessels. • The final blow is usually a heart attack or stroke. • A heart attack is the death of cardiac muscle tissue resulting from prolonged blockage ...
... most other developed nations • More than half the deaths in the United States are caused by cardiovascular diseases, diseases of the heart and blood vessels. • The final blow is usually a heart attack or stroke. • A heart attack is the death of cardiac muscle tissue resulting from prolonged blockage ...
Tissues: Groups of cells similar in structure and function
... bladder, relaxed state (360X); note the bulbous, or rounded, appearance of the cells at the surface; these cells flatten and become elongated when the bladder is filled with urine. ...
... bladder, relaxed state (360X); note the bulbous, or rounded, appearance of the cells at the surface; these cells flatten and become elongated when the bladder is filled with urine. ...
Lisa
... The nervous system communicates with the whole body with the help of neurons. Neurons send information to other neurons – without even touching each other! HOW? SYNAPSES. A synapse is a gap that separates each neuron from another neuron. An axon terminal is the end of a neuron; the synapse is in bet ...
... The nervous system communicates with the whole body with the help of neurons. Neurons send information to other neurons – without even touching each other! HOW? SYNAPSES. A synapse is a gap that separates each neuron from another neuron. An axon terminal is the end of a neuron; the synapse is in bet ...
File
... Rear is called the posterior end. Under part is called ventral surface Upper part is called the dorsal surface. ...
... Rear is called the posterior end. Under part is called ventral surface Upper part is called the dorsal surface. ...
Histology Midterm 2 Study Guide (Fall 2003)
... What is the embryological derivation of the nervous tissue? What is so special about this tissue embryologically? What constitutes the cytoskeleton of the neuronal tissue? Describe the general function of protoplasmic astrocytes. What about fibrous astrocytes? Oligodendrocytes? Microglial cells? Epe ...
... What is the embryological derivation of the nervous tissue? What is so special about this tissue embryologically? What constitutes the cytoskeleton of the neuronal tissue? Describe the general function of protoplasmic astrocytes. What about fibrous astrocytes? Oligodendrocytes? Microglial cells? Epe ...
Ions and molecules LO 2.13 Answer Key MC Question
... reactants, and produce O2, ATP, and NADPH as products. The NADPH and ATP are then passed to the stroma to be used in the Calvin cycle, in conjunction with CO2, to produce the G3P sugar that the plant can use. The Calvin cycle also releases NADP+ and ADP + a phosphate, which will be cycled back into ...
... reactants, and produce O2, ATP, and NADPH as products. The NADPH and ATP are then passed to the stroma to be used in the Calvin cycle, in conjunction with CO2, to produce the G3P sugar that the plant can use. The Calvin cycle also releases NADP+ and ADP + a phosphate, which will be cycled back into ...
Lower Invertebrates
... • Sponge size and body form – size is limited by water circulation – asconoid: simplest form; tubular and always small, found in clusters – syconoid: sponges that exhibit the first stages of body-wall folding – leuconoid: sponges with the highest degree of folding, which have many chambers lined wit ...
... • Sponge size and body form – size is limited by water circulation – asconoid: simplest form; tubular and always small, found in clusters – syconoid: sponges that exhibit the first stages of body-wall folding – leuconoid: sponges with the highest degree of folding, which have many chambers lined wit ...
Document
... •“NATURAL KILLER” cells destroy viruses. •Secrete “lymphokines” which attract phagocytic cells. •Secrete “perforin” which eats holes in the cells membrane or viral coat of invaders. •“Helper T cells”: •Induce macrophages to destroy other antigens •STIMULATE B-LYMPHOCYTES TO PRODUCE ANTIBODIES. (Can ...
... •“NATURAL KILLER” cells destroy viruses. •Secrete “lymphokines” which attract phagocytic cells. •Secrete “perforin” which eats holes in the cells membrane or viral coat of invaders. •“Helper T cells”: •Induce macrophages to destroy other antigens •STIMULATE B-LYMPHOCYTES TO PRODUCE ANTIBODIES. (Can ...
Z00-302(1.1)
... pieces of DNA along with genes, proteins, and nucleotides, and chromatin is a condensed package of chromosomes that basically allows all the necessary DNA to fit inside the nucleus. Both eukaryotic and prokaryotic cells each have genomes, which is what we call the entire set of an organism's genetic ...
... pieces of DNA along with genes, proteins, and nucleotides, and chromatin is a condensed package of chromosomes that basically allows all the necessary DNA to fit inside the nucleus. Both eukaryotic and prokaryotic cells each have genomes, which is what we call the entire set of an organism's genetic ...
Glossary
... acetylcholine a chemical that slows the heart rate by inhibiting the firing of the sinoatrial node. (9.3) acoelomates animals with three cell layers (ectoderm, endoderm, and mesoderm), but no body cavities such as cnidaria and flatworms. (13.3) acquired immune response a response through which the b ...
... acetylcholine a chemical that slows the heart rate by inhibiting the firing of the sinoatrial node. (9.3) acoelomates animals with three cell layers (ectoderm, endoderm, and mesoderm), but no body cavities such as cnidaria and flatworms. (13.3) acquired immune response a response through which the b ...
Embryology of the heart and the great vessels
... The cardiovacular system is functionally important in development. It starts working when the embryo is between 200 to 400 microns thick. ...
... The cardiovacular system is functionally important in development. It starts working when the embryo is between 200 to 400 microns thick. ...
human embryonic stem cell therapy
... as a person must be recognized”12 does not address the fact that fertilization is itself a process requiring at least 24 hours to complete. (And cloning does not require fertilization at all! When might we say, then, that a cloned human begins to exist?) While some may say that a person is present a ...
... as a person must be recognized”12 does not address the fact that fertilization is itself a process requiring at least 24 hours to complete. (And cloning does not require fertilization at all! When might we say, then, that a cloned human begins to exist?) While some may say that a person is present a ...
Phylum Platyhelminthes AKA Flatworms (3)
... lack of a respiratory system and a circulatory system but they do contain a nervous system. They are characterized by three germ layers which are ectoderm, mesoderm, and endoderm. Turbellaria –Planarians has one opening. They lack a respiratory system but they have an excretory system which is mainl ...
... lack of a respiratory system and a circulatory system but they do contain a nervous system. They are characterized by three germ layers which are ectoderm, mesoderm, and endoderm. Turbellaria –Planarians has one opening. They lack a respiratory system but they have an excretory system which is mainl ...
Part I - Spring Branch ISD
... trace the pathway of food as it travels through the organs of the digestive system beginning in the mouth. Be able to identify the structures of the digestive system. ...
... trace the pathway of food as it travels through the organs of the digestive system beginning in the mouth. Be able to identify the structures of the digestive system. ...
Lymphatic System / Immunity
... 2. Describe, compare, and contrast structures and processes that allow gas exchange, nutrient uptake and processing, waste excretion, nervous and hormonal regulation, and reproduction in plants, animals, and fungi; give examples of each. ...
... 2. Describe, compare, and contrast structures and processes that allow gas exchange, nutrient uptake and processing, waste excretion, nervous and hormonal regulation, and reproduction in plants, animals, and fungi; give examples of each. ...
ANATOMICAL TERMINOLGY
... receptor that has the proper shape. Binding creates a new structure— messenger and receptor—and the entire complex often changes shape as a result. This can change the function of the receptor. In this case, the binding of the messenger leads to the opening of a passageway through the plasma membran ...
... receptor that has the proper shape. Binding creates a new structure— messenger and receptor—and the entire complex often changes shape as a result. This can change the function of the receptor. In this case, the binding of the messenger leads to the opening of a passageway through the plasma membran ...
مع تحيات الحكيم: م . بعل Chapter 10: Blood. ( )1
... ( ) 16-The product of the stroke volume and the heart rate is known as the? a- cardiac reserve b- end-systolic volume c- blood pressure d- cardiac output e- end-diastolic volume ...
... ( ) 16-The product of the stroke volume and the heart rate is known as the? a- cardiac reserve b- end-systolic volume c- blood pressure d- cardiac output e- end-diastolic volume ...
UROGENITAL SYSTEM
... mesonephric (Wolfian) duct to the cloaca/bladder • In week 5 the thoracic segments regress but the mesonephric kidney continues functioning until week 10 to 12 ...
... mesonephric (Wolfian) duct to the cloaca/bladder • In week 5 the thoracic segments regress but the mesonephric kidney continues functioning until week 10 to 12 ...
File
... the cardiogenic plate. The cardiogenic plate, which is derived from splanchnopleuric mesoderm, is located cranial to the neural plate. ...
... the cardiogenic plate. The cardiogenic plate, which is derived from splanchnopleuric mesoderm, is located cranial to the neural plate. ...
Section 2: Enzymes and Digestion
... secretion of digestive glands. Because there is little water within the large intestine, the food becomes drier, thus forming faeces. ...
... secretion of digestive glands. Because there is little water within the large intestine, the food becomes drier, thus forming faeces. ...
Ch. 5 AP PP
... into the hair follicles and onto the surrounding skin - the secretion is called SEBUM- it lubricates the hair and inhibits growth of bacteria ...
... into the hair follicles and onto the surrounding skin - the secretion is called SEBUM- it lubricates the hair and inhibits growth of bacteria ...
respirotory practicle
... A bronchus is a passage of airway in the respiratory tract that conducts air into the lungs. The bronchus branches into smaller tubes, which in turn become bronchioles. No gas exchange takes place in this part of the lungs. The human trachea divides into two main bronchi , the left and the right, at ...
... A bronchus is a passage of airway in the respiratory tract that conducts air into the lungs. The bronchus branches into smaller tubes, which in turn become bronchioles. No gas exchange takes place in this part of the lungs. The human trachea divides into two main bronchi , the left and the right, at ...
Skeletal System
... – Cartilage is replaced by bones about two months in utero. – Ossification is the process where cartilage is replaced by bone. • Mineral deposits lay down near center • Bone tissues form OSTEOCYTES (bone cells) that replace cartilage. ...
... – Cartilage is replaced by bones about two months in utero. – Ossification is the process where cartilage is replaced by bone. • Mineral deposits lay down near center • Bone tissues form OSTEOCYTES (bone cells) that replace 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.