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How are primary and vestibular follicles automatically different?
Wiki User
∙ 12y ago
The primary follicle consists of a primary oocyte with a single layer of cuboidal/columnar follicular cells.
The secondary follicle consists of several layers of cuboidal/columnar follicular cells, now collectively called the membrana granulosa which begin to secrete follicular fluid.
Wiki User
∙ 15y ago
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How is the name follicle-stimulating hormone appropriate for its function?
In females, in the ovary FSH stimulates the growth of immature Graafian follicles to maturation. Graafian follicles are the mature follicle. Primary follicles mature to Graafian follicles. As the follicle grows, it releases inhibin, which shuts off the FSH production.
What is contained in each ovarian follicle?
various follicles one can find inside a typical ovary are primordial/primary/secondary follicles, mature vesicular, rupturing, mature-corpus luteum as well as corpus albicans
Structures of the vestibular system?
The vestibular system detects angular and linear acceleration. This is made possible by two related parts of the peripheral vestibular system: 1) the otoliths (utricle and saccule), which are sensitive to accelerative forces in a single plane (e.g. gravity); and 2) the semicircular canals - of which there are three at roughly orthogonal planes to each other - that are sensitive to accelerative forces in a circular plane (e.g. if you were to sit in the middle of a merry-go-round). There are peripheral vestibular organs located on each side of the head behind the ear. Technically they are referred to 'inner ear organs'. The primary function of the vestibular system (collectively: the peripheral organs + VIII cranial nerve + brainstem vestibular nuclei) is to detect accelerative forces and generate nerve impulses to the brain for integration with other senses and motor control. For simplicity we refer to the vestibular system as providing 'balance-sense' - however, 'balance' is how the brain interprets the signals. The organs themselves sense acceleration. The brain needs these signals in order to stabilize the eye muscles during head movements, allowing us to maintain gaze on a target. Vestibular signals are also used for axial-muscle motor control which allow us to maintain a center of gravity whilst upright. Blood-pressure regulation is also influenced by the vestibular system during changes in posture from a supine to an upright position. Vestibular signals are extensively integrated throughout the brain. In fact, they can even influence mood, the ability to think (calculate), and our memory systems - particularly spatial memory (i.e., 'cognitive mapping' of our environment). Interestingly, mood-centers of the brain also feed back into the vestibular system, which is why people afraid of heights (acute anxiety) may get a sudden attack of vertigo (perceived movement of the world, in the absence of real movement) if high up on the top of a building, say. The opposite is also true - people with balance disorders often develop DSM-IV psychiatric comorbidities, like agoraphobia, generalised anxiety disorder, and depression. The same people also have excruciating difficulty remembering where they are in relation to where they want to go - and an unfortunate consequence of this is that they often get lost. Even in familiar places. In terms of evolution, the vestibular system is the oldest sensory system. This may explain the intricate dependency the brain has for information about bodily acceleration.
What is the meaning of the words 'primary research'?
The words, primary research, mean collecting the original primary data about a given subject. Secondary research follows primary research by branching out in a different manner.
What are the different types of dispersion halos?
Primary dispersion halo and secondary dispersion halo.
Produced by primary follicles in the ovary?
Estrogen
What percent of primary follicles a woman has at puberty will mature?
10%. About 40,000 primary follicles remain at puberty, and about 400 mature over a women's lifetime.
Name the various follicles you can find inside a typical ovary?
Primordial, primary, secondary & mature follicles
During a woman's lifetime how many primary follicles fully develop into mature follicles?
400 to 500.
What are the primordial follicles stimulated to develop into primary follicles by the hormone called?
This is called estrogen.
Clusters of cells surrounding a single egg are called primary what?
follicles
Clusters of cells surrounding a single egg are called primary?
follicles
What hormone is produced by primary follicles in the ovary?
oestrogen and progesterone
How is the name follicle-stimulating hormone appropriate for its function?
In females, in the ovary FSH stimulates the growth of immature Graafian follicles to maturation. Graafian follicles are the mature follicle. Primary follicles mature to Graafian follicles. As the follicle grows, it releases inhibin, which shuts off the FSH production.
How are primary vesicular follicles different?
The primary follicle consists of a primary oocyte with a single layer of cuboidal/columnar follicular cells. The secondary follicle consists of several layers of cuboidal/columnar follicular cells, now collectively called the membrana granulosa which begin to secrete follicular fluid.
What is contained in each ovarian follicle?
various follicles one can find inside a typical ovary are primordial/primary/secondary follicles, mature vesicular, rupturing, mature-corpus luteum as well as corpus albicans
What is primary benefit of spreadsheet program?
Its ability to recalculate automatically
