A&P LAB Quiz 4,6,7
__________ sweat glands are found primarily in the genital and axillary areas
Apocrine
Because these organelles are responsible for providing most of the ATP that the cell needs, they are often referred to as the "powerhouse" of the cell. They are the:
Mitochondria
Of the two major cell types found in the nervous tissue ________ are highly specialized to generate and conduct electrical signals.
Neurons
Proteins are assembled on these organelles
Ribosomes
The ducts of ____________ glands usually empty into a hair follicle but may also open directly on the skin surface.
Sebaceous
The plasma membrane not only provides a protective boundary for the cell but also determines which substances enter or exit the cell. We call this characteristic:
Selective Permeability
The portion of hair that projects from the surface of the skin is known as the:
Shaft
This type of muscle tissue is found in the walls of hollow organs. It has no striations, and its cells are spindle shaped
Smooth muscle
____________ epithelial cells are scalelike and flattened
Squamous
The most superficial layer of the epidermis is the:
Stratum Corneum
Endocrine and exocrine glands are classified as epithelium because they usually develop from epithelial membranes.
True
Nails originate from the epidermis
True
Functions of the skin are:
excretion of body waste insulation protection from mechanical damage site of vitamin D synthesis
DNA replication occurs during
interphase
During ___________ the cell grows and performs its usual activities
interphase
These cells produce a brown-to-black pigment that color the skin and protects the DNA from ultaviolet radiation damage. These cells are called:
melanocytes
The end product of mitosis is four genetically identical daughter nuclei.
FALSE (2 Daughter nuclei)
All animal cells have a cell wall
FALSE (animal cells do not have a cell wall)
How many basic types of muscle tissue are there?
3
How many primary tissue types are found in the human body?
4
How many stages of mitosis are there
4
Thick skin of the epidermis contains ___________ layers
5
The skin has 2 distinct regions. The superficial layer is the ____________, and the underlying connective tissue is the _____________
Epidermis Dermis
When a cell is not dividing, the DNA is loosely spread throughout the nucleus in a threadlike form called:
Chromatin
_____________ is a yellow-orange pigment found in the stratum corneum and the hypodermis
Keratin
Define Cell
The structural and functional unit of all living things
Group of cells that are anatomically similar and share a function are called:
Tissues
Examples of connective tissues are:
bones ligaments tendons blood
All connective tissue is derived from an embryonic tissue known as
Mesenchyme
