Introduction:
The pituitary consists of the anterior pituitary and posterior pituitary, which differ by their origin and functions. The anterior lobe or adenohypophysis of the pituitary is derived from the invagination of the oral ectoderm. Based on nerve signals, the hypothalamus secretes hormones, which stimulate or inhibit the production of hormones by the anterior pituitary. The anterior pituitary synthesizes and secretes endocrine hormones such as follicle-stimulating hormone (FSH), luteinizing hormone (LH), adrenocorticotropic hormone (ACTH), prolactin, growth hormone (GH), and thyroid-stimulating hormone (TSH). The anterior pituitary hormones regulate
Want to see the full answer?
Check out a sample textbook solutionChapter 17 Solutions
A&P V.1(BIO 203)-W/CONNECT PKG
- ___________ removes webs between developing digits. a. Gastrulation c. Apoptosis b. Lactation d. Implantationarrow_forwardDuring cleavage, the _______ is converted to a ball of cells, which in turn is transformed into the __________. a. zygote; blastocyst b. trophoblast; embryonic disk c. ovum; embryonic disk d. blastocyst; embryonic diskarrow_forwardThe ________, a fluid-filled sac, surrounds and protects a human embryo and keeps it from drying out. a. amnion b. yolk sac c. allantois d. chorionarrow_forward
- The ribs form from the ___________ . notochord neural plate neural tube somitesarrow_forwardIn a human zygote, the cell divisions of cleavage produce an embryonic stage known generally as a _______. a. zona pellucida b. gastrula c. blastocyst d. larvaarrow_forwardDefine and describe the main features of the following developmental stages: fertilization, cleavage, gastrulation.arrow_forward
- The placenta is formed from ________. the embryos mesenchymal cells the mothers endometrium only the mothers endometrium and the embryos chorionic membrane the mothers endometrium and the embryos umbilical cordarrow_forwardThe olfactory pits form from which of the following? mesoderm cartilage ectoderm endodermarrow_forwardFrom which of the following is the embryo developed? Trophoblasts Inner cell mass Blastocoelen The yellow sacksarrow_forward
- Which phase of development does blastopore form Cleaveage Organogenesis Blastulation/blastula Fertilization Gastrulationarrow_forwardIn humans, implantation in the uterus occurs at whichstage of embryonic development?a. zygoteb. morulac. blastocystd. gastrulationarrow_forwardThe embryonic stage is completed by the end of the ___________________ week of development.arrow_forward
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781337408332Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
- Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning