152-170.Turner AJ, Leung MK, Stefano GB (1994): Degradation of neu- ropeptide signal molecules in immunocytes of vertebrates and invertebrates. In Scharrer B, Smith EM, Stefano GB (eds): Neuropeptides and Immunoregulation. Berlin, Heidelberg, New York: Springer-Verlag, pp 152-174....
Ovaries produce ova; fertilization occurs in oviducts. Human Male Reproductive System Testes produce sperm; fluid from glands joins sperm. Sex Organ Homologies Testis and ovary produce gametes; glands secrete fluids. 最好的學習方式。免費註冊。
Vertebrates (Vertebrata) are a group of chordates that includes birds, mammals, fishes, lampreys, amphibians, and reptiles. Vertebrates have a vertebral column in which the notochord is replaced by multiple vertebrae that form a backbone. The vertebrae surround and protect a nerve cord and provide...
The aromatase distribution pattern in the nervous system, Hatschek's pit and gonad closely is similar to that observedinvertebrates. actazool.org actazool.org 芳香化酶在文昌鱼神经系统、哈氏窝和性腺的分布模式与低等脊椎动物中的分布模式极为类似,尤其是芳香化酶在 脑内调节哈氏窝分泌活动的神经内分泌中枢...
Comments:Highly successful clade of large herbivores, include the largest animals of their time and teh first exploitation of vegetable matter by tetrapods. Previously tentrapods (amphibians and reptiles() had been carnivores only, feeding on insects, crustacea and other invertebrates, fish, and smal...
have hair and produce milk (marsupials, etc) CHORDATA Chordates have a notochord and a dorsal, hollow nerve cord. They are not quite invertebrates, but are more closely related to vertebrates than to invertebrates. A notochord is a long, flexible rod located between the digestive tube and the...
Vertebrates and Craniates:Humans and many of the animals with which we're most familiar have hardened skulls and vertebrae to protect our spinal cords and brains. This sets us apart from other animals which lack these projective structures. leaving them potentially more exposed to predators....
Often suburban habitats, surface nest build from leaves and other plant materials; live solitarily. In the nest (usually full of ectoparasites) they rest during day, and also hiber- nate. Food: invertebrates, small vertebrates and fruit. More common in lowland areas. Usually heavily infested by...
The tunicates(subphylum Tunicata): These include the salps, larvaceans, and tunicates such as thesea squirt. They are invertebrates as they don't have a backbone, but they do have a notochord during development. They are marine filter-feeders, with some tunicates living attached to rocks...
Describe the structural differences and similarities between major classes of vertebrates. What characteristic defines a chordate who is also a vertebrate? Describe two invertebrates that share features found in chordates? Identify the four distinguishing features that all chordates have. Few of th...