Unit 3 Study Guide
Unit 3 Lecture Study Guide
1. List the 4 primary tissue types and give the general characteristics and functions of each one.
a. Epithelium - 1) It protects us from the outside world – skin. 2) Absorbs – stomach and intestinal lining (gut). 3) Filters – the kidney. 4) Secretes – forms glands.
Characteristics (Traits):
1) Closely attached to each other forming a protective barrier. 2) Always has one free (apical) surface open to outside the body or inside (cavity) an internal organ. 3) Always had one fixed (basal) section attached to underlying connective tissue. 4) Has no blood vessels but can soak up nutrients from blood vessels in connective tissue underneath.
5) Can have lots of nerves in it (innervated).
6) Very good at regenerating (fixing itself). i.e. sunburn, skinned knee.
b. Connective Tissue - 1) Wraps around and cushions and protects organs. 2) Stores nutrients . 3) Internal support for organs. 4) As tendon and ligaments protects joints and attached muscles to bone and each other. 5) Runs through organ capsules and in deep layers of skin giving strength.
c. Nervous Tissue - 1) Conducts impulses to and from body organs via neurons
d. Muscle Tissue - 1) Responsible for body movement. 2) Moves blood, food, waste through body’s organs. 3) Responsible for mechanical digestion
The 3 Types of Muscle Tissue
4) Smooth Muscle – organ walls and blood vessel walls, involuntary, spindle-shaped cells for pushing things through organs. 5) Skeletal Muscle – large body muscles, voluntary, striated muscle packed in bundles and attached to bones for movement. 6) Cardiac Muscle – heart wall, involuntary, striated muscle with intercalated discs connecting cells for synchronized contractions during heart beat.
2. How are epithelial tissues classified?
1) By shape
a) squamous - flat and scale-like
b) cuboidal - as tall as they are wide
c)
1. List the 4 primary tissue types and give the general characteristics and functions of each one.
a. Epithelium - 1) It protects us from the outside world – skin. 2) Absorbs – stomach and intestinal lining (gut). 3) Filters – the kidney. 4) Secretes – forms glands.
Characteristics (Traits):
1) Closely attached to each other forming a protective barrier. 2) Always has one free (apical) surface open to outside the body or inside (cavity) an internal organ. 3) Always had one fixed (basal) section attached to underlying connective tissue. 4) Has no blood vessels but can soak up nutrients from blood vessels in connective tissue underneath.
5) Can have lots of nerves in it (innervated).
6) Very good at regenerating (fixing itself). i.e. sunburn, skinned knee.
b. Connective Tissue - 1) Wraps around and cushions and protects organs. 2) Stores nutrients . 3) Internal support for organs. 4) As tendon and ligaments protects joints and attached muscles to bone and each other. 5) Runs through organ capsules and in deep layers of skin giving strength.
c. Nervous Tissue - 1) Conducts impulses to and from body organs via neurons
d. Muscle Tissue - 1) Responsible for body movement. 2) Moves blood, food, waste through body’s organs. 3) Responsible for mechanical digestion
The 3 Types of Muscle Tissue
4) Smooth Muscle – organ walls and blood vessel walls, involuntary, spindle-shaped cells for pushing things through organs. 5) Skeletal Muscle – large body muscles, voluntary, striated muscle packed in bundles and attached to bones for movement. 6) Cardiac Muscle – heart wall, involuntary, striated muscle with intercalated discs connecting cells for synchronized contractions during heart beat.
2. How are epithelial tissues classified?
1) By shape
a) squamous - flat and scale-like
b) cuboidal - as tall as they are wide
c)