最新15篇文章贯通英语四级词汇MP3 Unit13-Part2

[00:00.00]In 1935, he journeyed [00:04.04]to the Soviet Union to attend [00:06.24]the International Physiological Congress. [00:10.17]The Communist Parties of Canada [00:12.69]and the United States [00:14.11]had made arrangements for [00:15.75]him to

新视野大学英语视听说教程 4 Unit 1-11

V. Lets Talk Script Hello, everyone. Today I invite you to join me in an exploration off the causes of depression. There ate many factors involved, but I believe some deserve special attention. Heredity certainly plays a role. .The tendency to develo

专业术语—口腔生理学术语E3(英文详解)

Epidermal growth factor - a cytokine that stimulates epithelial cell proliferation. Epinephrine - a neurotransmitter substance found at all adrenergic synapses (nor epinephrine or epinephrine). It is

专业术语—口腔生理学术语H1(英文详解)

Habitat - a location which has a suitable environment for an organism to live in. Caves are natural habitats for bats, trees for birds; oral surfaces and crevices, for some bacteria. Haemostasis - the

专业术语—口腔生理学术语I4(英文详解)

Intermediate filaments - unlike microfilaments and microtubules, they are verystable. Instead of being stacked proteins, as in actin, intermediate filaments are built of interlocking proteins. A dense

专业术语—口腔生理学术语J-K(英文详解)

Junctional epithelium - the epithelium which seals the base of the gingival sulcus against the tooth. Keratan sulphate - a glycosaminoglycan found in cartilage, with chondroitin sulphate. Keratin - a

专业术语—口腔生理学术语L1(英文详解)

Lamella-bone - the microscopic structure of cortical bone gives it the appearance of concentric or parallel plates ( from Latin, lamella, the diminutive of lamina, meaning a plate or leaf). Lamina pro

专业术语—口腔生理学术语M1(英文详解)

Macrophages - cells derived from monocytes which have the ability to phagocytose foreign particles and dead tissue and to move through tissue, or to remain fixed in one place. There are many macrophag

专业术语—口腔生理学术语E1(英文详解)

Ecological balance - astable balance in the numbers of each species in an ecosystem. In the ecosystem of the mouth this balance is brought about by competition and cooperation between the different or

专业术语—口腔生理学术语C2(英文详解)

Cemento-enamel junction- the junction between the enamel covering the crown of the tooth and the cementum covering its root. Often referred to as the CEJ. Cementoblasts - cells of mesenchyme origin, i

专业术语—口腔生理学术语A2(英文详解)

Ameloblasts- cells which differentiate from ectoderm and secrete enamel during tooth development. Amino acids - building blocks of proteins containing a carboxyl group (COOH) and an amino group(NH2) b

专业术语—口腔生理学术语A1(英文详解)

Abductors - muscle taking a limb or the jaw away from the body. Acetyl choline - Aneurotransmitter substance found at all cholinergic synapses including those of motoneurones at the neuromuscular junc

专业术语—口腔生理学术语S4(英文详解)

Symbiosis - a mutually beneficial inter-relationship between two organisms, for example between bees and flowers (pollen carrying in return for nectar). Sympathetic nerves - the sympathetic nervous sy

专业术语—口腔生理学术语V(英文详解)

Vaccine - a planned exposure to an antigen in order that memory B lymphocytes can retain a memory for it. In practice the organism carrying the antigen is either killed or modified so that it does not

专业术语—口腔生理学术语M2(英文详解)

Microbiology - the study of the microscopic forms of life. Microfilaments - are the smallest filaments of the cytoskeleton. The filaments are made of hundreds of actin molecules, stacked in a line. Th

专业术语—口腔生理学术语P1(英文详解)

Paracrine - cell messengers also called cytokines which are locally acting, produced by neighbouring cells or the extracellular matrix, as distinct from as distinct from endochrine or hormonal messeng

专业术语—口腔生理学术语P5(英文详解)

Prostaglandins - are members of a class of hormones known as the eicosanoids. They are released by cells which have been damaged and have a powerful ability to sensitise nerve endings causing tenderne

专业术语—口腔生理学术语S1(英文详解)

Saturated solutions - Salts such as the apatites do not readily become ionized and dissolve in water. When no more ions can dissolve the solution is said to be saturated. The concentration of ions in

VOA标准英语2010年-Six Astronauts Train for Eventual Mars

Newlywed Alexei Sytev and his fellow crewmembers will spend a year and a half living aboard a virtual spacecraft to simulate an actual space mission to Mars Six astronauts are about to experience what it's like to travel to Mars and back, only withou

【英语时差8，16】抚养方式怎样影响大脑

On this Moment of Science Ya?l and Don discuss how parenting affects the brain. Ya?l : On today's Moment of Science--wait a sec, Don, do you mind if I call home real quick? Don: Now? In the middle of the show? Y: Well, I'm worried about the baby. I j