Full Answer
“ The type of epithelium in the penis slide is stratified squamous epithelium. “3. Which layer of the uterus forms a new functional layer each month? “ The endometrium is the new layer that forms and is shed every month.
In simple columnar epithelium, the nucleus of the tall column-like cells tends to be elongated and located in the basal end of the cells. Like the cuboidal epithelia, this epithelium is active in the absorption and secretion of molecules using active transport.
Pseudostratified columnar epithelium is found in the respiratory tract, where some of these cells have cilia. Both simple and pseudostratified columnar epithelia are heterogeneous epithelia because they include additional types of cells interspersed among the epithelial cells.
Fourth, epithelial tissues are avascular; nutrients must enter the tissue by diffusion or absorption from underlying tissues or the surface. Last, epithelial tissue is capable of rapidly replacing damaged and dead cells, necessary with respect to the harsh environment this tissue encounters.
Penis (Cross-Section) 100X. The urethra is lined with stratified, squamous epithelium near the bottom of the tubule.
The most superior part of the male reproductive system is the vas deferens. The vas deferens is a tube that starts at the testicle and receives...
Testes. The testes are the primary male reproductive organ and are responsible for testosterone and sperm production.
The male genitals include: the testicles (pronounced: TESS-tih-kulz) the duct system, which is made up of the epididymis and the vas deferens. the accessory glands, which include the seminal vesicles and prostate gland.
The stratified epithelium is named by the shape of the most apical layer of cells, closest to the free space. Stratified squamous epithelium is the most common type of stratified epithelium in the human body. The apical cells appear squamous, whereas the basal layer contains either columnar or cuboidal cells.
Epithelial tissue primarily appears as large sheets of cells covering all surfaces of the body exposed to the external environment and lining internal body cavities. In addition, epithelial tissue is responsible for forming a majority of glandular tissue found in the human body. Epithelial tissue is derived from all three major embryonic layers.
Epithelial cells are typically characterized by unequal distribution of organelles and membrane-bound proteins between their apical and basal surfaces. Structures found on some epithelial cells are an adaptation to specific functions. For example, cilia are extensions of the apical cell membrane that are supported by microtubules. These extensions beat in unison, allowing for the movement of fluids and particles along the surface. Such ciliated epithelia line the ventricles of the brain where it helps circulate cerebrospinal fluid and line the respirtatory system where it helps sweep particles of dust and pathogens up and out of the respiratory tract.
Epithelial tissues are classified according to the shape of the cells composing the tissue and by the number of cell layers present in the tissue. ( Figure 4.2.2) Cell shapes are classified as being either squamous (flattened and thin), cuboidal (boxy, as wide as it is tall), or columnar (rectangular, taller than it is wide). Similarly, cells in the tissue can be arranged in a single layer, which is called simple epithelium, or more than one layer, which is called stratified epithelium. Pseudostratified (pseudo- = “false”) describes an epithelial tissue with a single layer of irregularly shaped cells that give the appearance of more than one layer. Transitional describes a form of specialized stratified epithelium in which the shape of the cells, and the number of layers present, can vary depending on the degree of stretch within a tissue.
Simple squamous epithelium, because of the thinness of the cells, is present where rapid passage of chemical compounds is necessary such as the lining of capillaries and the small air sacs of the lung.
Simple cuboidal epithelia are observed in the lining of the kidney tubules and in the ducts of glands. In simple columnar epithelium, the nucleus of the tall column-like cells tends to be elongated and located in the basal end of the cells.
There are three types of anchoring junctions: desmosomes, hemidesmosomes, and adherens.
There are two seminal vesicles in the male reproductive system. 4. Relate the location of the myometrium to the endometrium. The myometrium is located between the endometrium and the perimetrium. 5. Relate the location of the prostate to the deferent duct. The prostate is medial to the deferent duct.
Most male mammals have testes in an external sac because the semen are very sensitive to temperature difference. The testes have the ability to move further away from the body when its hot or closer to the body when its cold so the sperm remain at the optimum temperature. “ “4.
The most superior part of the male reproductive system is the deferent duct. The most superior part of the female reproductive system is the ampulla of uterine tube. 2.
What is meant by urogenital opening? The urogenital opening is where the penis is located in the male and where the vaginal opening is the female. This is also the opening for the urethra and in some mammals also where the excrement exits the body. “ “. Lab 18 The Reproductive System BIO202L “ 3.
The lumen of the small intestine is lined with simple columnar epithelium. The lumen of the bladder is lined by transitional epithelium (also called urothelium). Hence, the correct answer for this question is "D".
This simple epithelium contains a mixture of two types of columnar cells: absorptive cells (also called enterocytes) and goblet cells (single celled glands that secrete mucus). Most of the epithelium cells in this image are absorptive cells. Hence, this is the correct answer. Click card to see definition 👆.
This image shows the simple columnar epithelium lining the mucosal surface of the small intestine. This simple epithelium contains a mixture of two types of columnar cells: absorptive cells (also called enterocytes) and goblet cells (single celled glands that secrete mucus).
One of the important functions of this epithelium (and one of the reasons it is fully keratinized) is to prevent loss of fluid from the body (desiccation). Hence, this is the correct answer.
Hemidesmosomes are involved in adhesion of epithelial cells to extracellular matrix (the basal lamina of the basement membrane). Hence a defect in hemidesmosomes would be expected to result in the epithelium releasing from the underlying basement membrane. Hence, this is the correct answer.
Tonsils are masses of lymphoid nodules/lymphoid follicles covered by a non-keratinized stratified squamous epithelium (see at upper left of the image) and can also exhibit large invaginations or crypts (not to be confused with the Crypts of Lieberkuhn in the small and large intestines).
One of the main functions of the epidermis (and particularly of the stratum corneum) is to protect the surface of the body from abrasion, from entry of pathogens and from loss of water. Hence, this is the correct answer.