Reproductive System - Local
... secondary spermatocyte into two spermatids. These
develop into mature spermatozoa, also known
as sperm cells. Thus, the primary spermatocyte gives rise
to two cells, the secondary spermatocytes, and the two
secondary spermatocytes by their subdivision produce
four spermatozoa. The
Just like spermato ...
ECE 593 - Southern Illinois University Carbondale
... Cortisol is one of the hormones in the human body
that raises the level of glucose in the blood.
When there is low glucose in the blood, the
hypothalamus stimulates corticotrophin releasing
hormone, which in turn stimulates the anterior
When this gland is stimulated it releases ACTH ...
... 9.1.5 Outline the processes involved in oogenesis including mitosis, cell growth, the two
divisions of meiosis, the unequal division of cytoplasm and the degeneration of polar
During fetal development in a girl:
Germ cells called oogonia divide by mitosis to produce many oogenia, diploid.
Genesis and General Characteristics of WBCs
... Neutrophils have two types of granules that:
Take up both acidic and basic dyes
Give the cytoplasm a lilac color
Contain peroxidases, hydrolytic enzymes, and defensins
Spaying and Neutering Dogs and Cats by C. Kohn, WHS
... other product is a polar body. A polar body is a smaller cell with very little cytoplasm. While it contains diploid
chromosomes like the secondary oocyte, it cannot undergo conception. This is necessary because the structure that will
eventually become the egg must also become the first cell of the ...
... The spheres on the inside of the volvox
are called gonads, or daughter colonies.
The gonads grow from cells in the equator
of the volvox.
These cells enlarge and divide until they
become visible spheres.
The flagella are on the inside of the
spheres so they need to turn themselves
Hormonal Regulation of Sodium and Water Balance
... They have apical Na+ and K+ channels that mediate Na+
reabsorption and K+ secretion, respectively
have vasopressin-regulated water channels (aquaporin-2
on the apical membrane, aquaporin-3 and -4 on the
In the absence of vasopressin, inner medullary collecting
duct cells are wat ...
Questions for entire chapter.
... Which portion of the kidney has all the renal corpuscles? Which region consists of loops
of Henle and collecting ducts?
What is unusual about the vascular arrangement in the kidneys?
What and where are the components of the juxtaglomerular apparatus? Which cells
What three factors sti ...
... Bile is composed of bile salts, water & electrolytes, cholesterol, phosphlipids and
wastes intended for excretion, (bilirubin).
Nephron - Amazon S3
... Capillaries of the Nephron
The glomerulus is not the only capillary bed associated with
nephrons. Peritubular capillaries are branches of the efferent
arterioles that drain the glomeruli and recover most of the filtrate
produced in the renal corpuscle. Glomerular capillaries differ from other
A germ cell is any biological cell that gives rise to the gametes of an organism that reproduces sexually. In many animals, the germ cells originate in the primitive streak and migrate via the gut of an embryo to the developing gonads. There, they undergo cell division of two types, mitosis and meiosis, followed by cellular differentiation into mature gametes, either eggs or sperm. Unlike animals, plants do not have germ cells set aside from in early development. Instead, germ cells can come from somatic cells in the adult (such as the floral meristem of flowering plants).