Exam 4

Question 1

This tissue has a basement membrane

Answer 1

Epithelial

Question 2

Lines blood vessels

Answer 2

Simple squamous

Question 3

Glands, lining of kidney tubules

Answer 3

Simple cubodial

Question 4

Lining of digestive tract, bronchi, and uterine tubes

Answer 4

Simple columnar

Question 5

Outer layer of skin

Answer 5

Stratified squamous

Question 6

Sweat gland duct, ovaries

Answer 6

Stratified cubodial

Question 7

Upper respiratory tract, vas deferens

Answer 7

Pseudostratified

Question 8

Characteristics of Epithelial tissue

Answer 8

• Cellular
• Avascular
• Polar
• Regenerates rapidly

Question 9

Free surface of epithelial tissue

Answer 9

apical

Question 10

Embryonic origin of epithelial tissue

Answer 10

All: endoderm, ectoderm, mesoderm

Question 11

Embryonic origin of Connective tissue

Answer 11

Mesoderm

Question 12

What tissue is tendons and ligaments?

Answer 12

Dense connective

Question 13

What tissue is between organs?

Answer 13

Loose connective

Question 14

Characteristics of Connective tissue

Answer 14

• Vascualr
• Extracellular matrix
• Several types of cells

Question 15

Made up of long excitable, contractile cells

Answer 15

Muscle tissue

Question 16

Embryonic origin of connective tissue

Answer 16

Mesoderm

Question 17

Embryonic origin of nervous tissue

Answer 17

Ectoderm

Question 18

Tissue specialized to conduct impulses

Answer 18

Nervous

Question 19

Sensor and effector of negative feedback systems

Answer 19

Sensors monitor changes; if the value is too high or low the sensor activates an effector to counteract the change

Question 20

A neuron at rest has more potassium on the _____

Answer 20

Inside

Question 21

A neuron at rest has more sodium on the _____

Answer 21

Outside

Question 22

At rest the ____ channels are closed

Answer 22

Na +

Question 23

Which channel is always open?

Answer 23

K + leakage channel

Question 24

At rest the ______ is active.

Answer 24

Na +/K+ Pump

Question 25

Depolarization to threshold: A stimulus causes what to happen?

Answer 25

- Na + channels to open briefly - Na + diffuses into the cell - Causes additional Na + channels to open - Cell reaches threshold potential

Question 26

What happens at peak depolarization?

Answer 26

- Membrane reverses its polarity - Na + close - K + leaves the axon - Cells interior regains it negative charge

Question 27

Saltatory conduction

Answer 27

In the mylenated axons, Na + channels occur only at the odes of ranvier, action potentials jump from one node to the next which speeds up impulses

Question 28

Steps of action potential reaching the terminals

Answer 28

1. Reaches terminal 2. Triggers opening of ca ++ channels 3. Ca ++ diffuses into the axonal terminal 4. Vesicles move and fuse with membrane 5. neurotransmitter released via exocytosis 6. Neurotransmitter diffuses across synaptic cleft 7. NT binds to receptor on postsynaptic cells synaptic cleft 8. EPSP or IPSP generated in postsynaptic cell 9. NT cleared from cleft 10. Vesicles replenished, Ca++ channels shut

Question 29

Phermones

Answer 29

Communication chemicals between animals of the same species

Question 30

Endocrine characteristics

Answer 30

- Ductless glands - Release chemicals into the blood - Prolonged actions

Question 31

What triggers 2nd messenger systems?

Answer 31

Water-soluable hormones

Question 32

What directly alters gene expression?

Answer 32

Lips-Soluable hormones

Question 33

Peptide hormones are _____-soluable

Answer 33

Water

Question 34

Steroid Hormones are ____-soluable

Answer 34

Lipid

Question 35

Water soluble is _____ acting

Answer 35

fast

Question 36

Lipid soluble is _____ acting

Answer 36

slow