Exam 1 Flashcards
(307 cards)
What are the 4 basic tissue types
Epithelium, Connective, muscle, and nerve
Types of epithelium tissue
squamous(flat shaped), columnar(tall, thinly shaped), cuboidal(cube shaped), stratified(has multiple shapes)
Functions of the epithelium
Secretion, selective absorption, protection, transcellular transport and sensing.
Where is the epithelium found?
The linings of cavities, organs, and glands
Characteristics of the epithelium
Contain no blood vessls, so they receive their nutrients from underlying membrane, via diffusion. (Mucous and Serous membranes)
Where is the connective tissue found?
Found between other tissues everywhere in the body. Joints, ligaments, and tendons
3 main components of connective tissue
Fibers (elastic or collagenous), ground substance, and cells (fibroblast, adipocytes, macrophages, and leukocytes)
Types of connective tissue
Blood plasma, adipose tissue, tendons, ligaments, cartilage and bone.
What are muscle tissues?
Soft tissue that composes the muscle in the human body. Muscle cells are cell walls with well developed contractility.
Types of muscle cells
skeletal, smooth, and cardiac.
Skeletal muscles
Striated muscles, that only contract voluntarily
Smooth muscle
non-striated muscle, that contracts involuntarily and without conscious intervention.
Cardiac muscle
Semi-striated muscle, with intercalated disks. Contracts involuntarily and without conscious intervention. Found in the heart.
How can cardiac and smooth muscles be activated?
Through interactions of the nervous system and by receiving innervation from peripheral plexuses or endocrine/ hormonal type activation.
When do skeletal muscles contract voluntarily?
Upon influence from the CNS. reflexes are a form of non conscious activation from the skeletal muscle
What is the function of an intercalated disk?
helps with smooth and coordinated contractions. (contracts the heart so it beats at the same time)
Component of the nerve tissue are
neurons and nerve cells
Functions of the nerve tissue
sensory input, integration, control of muscles, homeostasis, and mental activity.
Two types of neurons are
- Multipolar motor and autonomic (looks like a tree with the axon as the tree body)
- pseudo unipolar sensory (looks like it has 2 bodies and one head
Division of the nervous system containing the brain and spinal cord
Central Nervous System (CNS)
Division of the nervous body with everything outside of the CNS
Peripheral Nervous System (PNS)
Location of neuron of the cell bodies, major component of CNS, contains myelinated axons
Gray Matter
Location of the interconnecting fiber tract, contain relatively few cell bodies
White matter
Thick outer most layer of the meninges
Duramater