HW Assignment #2
Place the following terms or examples with the correct category: Terms/examples: -Adipose -Cartilage -Bone -Dense regular -Dense irregular -Blood -Areolar Categories: -Storage -Transport -Physical protection -Binding of structures -Support -Immune protections
Storage = Bone, Adipose Transport = Blood Physical protection = Bone, adipose Binding of structure = Dense irregular, Dense regular Support = Bone, cartilage Immune protection= Areolar
The conductive cells of nervous tissue are called _____________.
neurons
The excitable cells of the nervous system are called ______
neurons
The body of a neuron is called the ________
neurosoma
Cells that break down bone
osteoclasts
List the functions of connective tissues:
physical protection and support, storage, transport, binding of structures, and immune protection.
True/False: As one ages, there is an increase in the number of muscle cells.
False
The ________ are the most numerous cells of nervous tissue.
Neuroglia
Nervous Tissue characteristics
-Electrically excitable -when excited, the cells conduct electrical impulses to other cells -cells are stimulated by changes in the membrane potential -can receive and transmit electrical signals -protected by neuroglia
Cells that store lipids
Adipocytes
Match the items given with the appropriate category: Items: Blood Bone and Cartilage Loose and dense connective tissue Categories: Fluid connective tissue Supporting connective tissue Connective tissue Proper
Blood = Fluid connective tissue Bone and cartilage = supporting connective tissue Connective tissue proper = loose and dense connective tissue
Osteocytes are residents of ________ tissue.
Bone
Match the type of muscle tissue with its description: Descriptions: -no striations; involuntary -striated; involuntary -striated voluntary Types: -Cardiac muscle tissue -Skeletal muscle tissue -Smooth muscle tissue
Cardiac muscle tissue = striated; involuntary Skeletal muscle tissue = striated; voluntary Smooth muscle tissue = no striations; involuntary
Fibers that are flexible but resist stretching
Collagen Fibers
Tendons and ligaments are primarily made of:
Dense Regular connective tissue
Which type of connective tissue predominates in the deep portion of the dermis, where it lends strength to the skin?
Dense irregular
The visible part of the ear has the ability to stretch significantly, and then recoil back to its original position. Which protein fiber must be present?
Elastic
Fibers that can recoil to their original shape
Elastic fibers
True/False: As one ages, cells have a more efficient functional ability.
False
True/False: As one ages, cells have increased functional ability.
False
True/False: As one ages, elastic fibers fragment and become more elastic.
False
Cells that form fibers and ground substance in the extracellular matrix
Fibroblasts
Cells that maintain their fibers and ground substance in the extracellular matrix
Fibrocytes
During childhood, an example of _______ occurs as the liver increases in size as hepatocytes undergo cell division.
Hyperplasia: increase in cell number
Which feature is found in both cartilage and bone?
Lacuna
What type of tissue supports epithelium?
Loose connective tissue
Cells that can move and ingest foreign substances
Macrophages
Cells that are nonmotile and release inflammatory chemicals
Mast cells
Cells that form bone
Osteoblasts
Cells that maintain bone
Osteocytes
Neuroglia _______ and assist neurons
Protect
Match the type of connective tissue proper with its location in the body: Locations: -Dermis and periosteum -Walls of large arteries -Subcutaneous layer -Tendons and ligaments -Stroma of spleen and liver Tissues: -Reticular -Elastic -Dense irregular -Dense Regular -Adipose
Reticular = stroma of spleen and liver Elastic = walls of large arteries Dense irregular = dermis and periosteum Dense regular = Tendons and ligaments Adipose = Subcutaneous layer
Which type of connective tissue protein fiber forms a meshlike framework that provides structural support within many organs (within the spleen, for example)?
Reticular Fibers
Fibers that branch to form a supporting network
Reticular fibers
The structure of the spleen and lymph nodes are composed mainly of
Reticular loose connective
The type of muscle that has elongated, multinucleated cells and is under voluntary control is __________ muscle.
Skeletal
The type of muscle tissue that would be found in the wall of the bladder is ________ muscle tissue.
Smooth muscle tissue
True/False: A gland may be composed of a single cell?
True
True/False: As one ages, cells divide more slowly.
True
True/False: As one ages, the rate of red blood cells synthesis declines
True
True/False: As one ages, there is a decrease in the number of neurons.
True
True/False: As one ages, tissue function gradually decreases.
True
What tissues have cells residing in lacunae?
cartilage and bone
A _______________ receives signals from other cells
dendrite
Axons primary function:
to transmit signals away from the cell body.