LABORATORY 7 HISTOLOGY II -- MUSCLE TISSUE, NERVOUS TISSUE, MEMBRANES, AND THE INTEGUMENTARY SYSTEM

Skeletal Muscle Tissue

Associated with movement and is under voluntary control.

located in skeletal muscules

Smooth Muscle Tissue

Found in organs and structures like the digestive tract, and operates involuntarily.

Cardiac Muscle Tissue

Found in the heart, has unique characteristics, and operates involuntarily.

Axon

Conducts electrical signals away from the neuron's cell body

Cytoplasm

Houses cellular organelles; site of various cellular activities

Neurofibrils

Provide structural support; aid in substance transport

Telodendrites

Form synaptic connections with other cells.

Nucleus

Contains DNA; controls cellular activities

Nissl Bodies

involved in protein sysnthesis

Dendrites

Receive signals; transmit them toward the cell body

Nucleolus

involved in ribosome production

Nodes of Ranvier

• They help nerve impulses travel faster by allowing them to jump from node to node.

myelin sheath

protective coating around a neuron's communication line (axon). It helps the electrical signals travel faster

main types of tissues in the human body

1. Epithelial Tissue: Forms protective coverings and linings, often on body surfaces and organs.

2. Connective Tissue: Provides support, connects, and protects various body structures.

3. Muscle Tissue: Responsible for body movements, posture, and heat generation.

4. Nervous Tissue: Facilitates communication and coordination through electrical impulses and neurotransmitters in the nervous system.

three types of body membrane

mucous membrane

Serous membranes

cutaneous membrane

mucous membrane

• Location: Line body cavities open to the exterior.

• Function: Moist membranes with various epithelia; contain goblet cells or mucous glands.

• example: reproductive tract

function and body location of nervous tissue

Function of Nervous Tissue: Nervous tissue acts like the body's communication system, receiving and sending electrical signals to control actions and respond to stimuli.

Body Location: Found in the brain, spinal cord, and nerves throughout the body, forming a network that helps coordinate functions and reactions. It's like the body's messaging and control center.

Serous membrane

protective layers that cover the inside of certain body spaces. They are found in closed areas like the heart, lungs, and the abdominal region.

cutaneous membrane

fancy name for our skin. It's the outer layer exposed to the air, and it's what we feel when we touch ourselves. It's a dry layer and is part of the system that includes our skin, hair, and nails.

state the three layers of the skin

what is the epithelium of the outer layer of skin

keratinized stratified squamous epithelium

where is the epidermis thickest

palms of the hand

where is the epidermis thinnest

eyelids

what are the two layers within the dermis

the thin superficial papillary layer is the areolar connective tissue and it connects the skin to the tissues below.

deepest and thickest layer of the two is the irregular dense connective tissue and support the skin and body to prevent ripping

state the associated structure of the epidermis