Lab5 Nervous tissue skin

Lab5 Nervous tissueskin

1. Myelinated nerve fiber (No.12)2. Sympathetic ganglia(No.13)3. Finger skin (No.14)4. Head skin (No.5)5. Quiz1: 11:20-11:40 AM

20131023

Jun Zhou （周俊）School of Medicine, Zhejiang University

Nerve tissue: neuron+neurogliaNeuron: gray matter (CNS), ganglia (PNS)

Anterior horn

Posterior horn

Motor neuron: HE×400

Multipolar neuron

Axon

Axon hillock

Dendrite

Nissl body

Motor neuron: HE ×400

Axon hillock

Myelinated nerve fiber (No.12): HE ×40

Epineurium

Perineurium

endoneurium

Myelinated nerve fiber: HE ×400

Axon

Myelin

neurolemma

Schwann cell

Endoneurium

perineurium

Myelinated nerve fiber: HE ×400

Node of Ranvier

Axon

Myelin

neurolemma

Sympathetic ganglia (No.13): HE ×40

Neurons

Nerve fiber

Ganglia: HE × 100

neurons

Nerve fibers

Sympathetic ganglia: HE × 400

Neurons

Satellite cells

Ganglia: unmyelinated nerve fiber HE × 400

Ganglia: unmyelinated nerve fiber HE × 400

Neuroglial cell : × 400 fibrous astrocyte and protoplasmic astrocyte

Neuroglial cell × 400 Oligodendrocyte

Neuroglial cell × 400 Microglia

Lamellar corpuscle × 100 Pacinian corpuscle

Tactile corpuscle × 100 Meissner’s corpuscle

Tactile corpuscle × 400

Motor end plate × 40 Neuromuscular junction

Motor end plate × 400

Finger skin

epidermis

Papillary layer

Reticular layer dermis

Finger skin (No.14)

EpidermisThe stratum basal

The stratum spinosum

The stratum granulosum

The stratum lucidum

The stratum corneum

DermisPapillary layer

Reticular layer

hypodermis

Meisser’s corpuscle, touch receptor

Sweat gland in the reticular layer

Secretory portionSimple pyramidal epi.

Myoepi.cell

Basement membrane

Ducts

Stratified cuboidal Epi.

Head skin (No.5)

Epidermis

Dermis

hairs

Sebaceous glands

Arrector pili muscles

Sweat glands

Head skin

Hair

Hair trunk

Hair root

Hair follicle

Sebaceous glands

Arrector pili muscles

Hair bulb

Dermal papilla

Root sheath

Dermal sheath (CT sheath)

Sebaceous glands

Ducts end at upper part of hair follicle

Filled with lipid droplets

The end!