Simple epithelial tissues are formed as single-layered structures that are present throughout the body. These structures are present in different organs based on the requirement and function of those cells in the organ. Complex epithelium is formed with more than one membrane and can be pro...
作者: H Fox 摘要: Two types of dermal glands originate in the body and base of the limbs in Xenopus laevis, from NF stage 57. The granular glands are more numerous and better developed on the back; only mucous glands... DOI: 10.1007/978-3-662-00989-5_7 被引量: 18 收藏...
Testes (also referred to as testicles) are two relatively large glands that are housed within a sac called the scrotum. Testes are found only in males and are the equivalent of ovaries in females. Answer and Explanation: Out of the opt...
1.A small glandular organ that is situated behind the top of the breastbone, consisting mainly of lymphatic tissue and serving as the site of T cell differentiation. The thymus increases gradually in size and activity until puberty, after which it begins to atrophy. ...
Among the various brain regions, the mushroom bodies (corpora pedunculata) are the main centers of association of stimuli received from the eyes, antennae, and the posterior region of the body. In the brain of bees, these pairs of structures are located dorso-laterally and are made up of ...
They are found throughout the entire inner surface of the stomach and are divided into 3 types depending on the region in which they are found. Gastric glands proper (principal glands) are found in the fundus/body of the stomach. The cells of these glands produce around two litres of ...
In this period, the pituitary hormone prolactin stimulates the glands to produce milk, while the hypothalamic hormone oxytocin stimulates the ejection of milk through the nipple. Outside of the postpartum period, the glands are less abundant with most of the breast tissue being filled with adipose...
Thus this lineage-restricted progenitor compartment expresses several markers known to be important in embryonic and somatic stem cell compartments. Of note, LGR5 was not identified in our PDG microarray analysis; however, because it is a well-characterized stem cell marker in the stomach and ...
Hormones are messengers in the body and are secreted in different glands; for instance, insulin is secreted in the pancreas. However, some hormones...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
Seminal Vesicle | Definition, Anatomy & Function from Chapter 3 / Lesson 6 71K What are the seminal vesicles? Learn the anatomy, the location, what is produced, as well as the role of the seminal vesicles in the male reproductive system. Related...