Laboratory 10: Muscles and Nervous Tissue

Question 1

What are muscle tissues characterized by?

Answer 1

The presence of elongated cells often referred to as muscle fibers that can contract to create body movements.

Question 2

Where are our muscles?

Answer 2

Attached to the skeleton but muscles are also components of our many internal organs.

Question 3

What happens during muscle contraction?

Answer 3

Considerable body heat is generated to help maintain body temperature.

Question 4

What happens if more heat is generated then needed?

Answer 4

When more heat is generated then needed to maintain body temperature much of the heat is dissipated from our bodies through the skin.

Question 5

What are the three types of muscles?

Answer 5

Skeletal, smooth, cardiac

Question 6

Describe skeletal muscles?

Answer 6

Are usually under our conscious control and are considered voluntary.

Question 7

Are usually under our conscious control and are considered voluntary. These are:

Answer 7

Skeletal Muscles.

Question 8

Where are most skeletal muscles?

Answer 8

Most are attached to bones via tendons.

Question 9

What skeletal muscles do not attach to bones?

Answer 9

Tongue, facial muscles and voluntary sphincters.

Question 10

What are the functions of skeletal muscles?

Answer 10

Body movements, maintaining posture, breathing speaking and controlling waste eliminations. As well as helping to maintain blood sugar levels, heat production, and protection.

Question 11

Body movements, maintaining posture, breathing speaking and controlling waste eliminations. As well as helping to maintain blood sugar levels, heat production, and protection. These are functions of _____.

Answer 11

Skeletal muscles.

Question 12

What do skeletal muscles look like?

Answer 12

Skeletal muscles are striated with an organized pattern of contractile proteins and are multinucleated.

Question 13

Describe smooth muscles

Answer 13

Smooth muscle cells are NOT striated and each cell has a fusiform shape with a nucleus close to its center. UNDER INVOLUNTARY CONTROL.

Question 14

_____ cells are NOT striated and each cell has a fusiform shape with a nucleus close to its center. UNDER INVOLUNTARY CONTROL.

Answer 14

Smooth muscle

Question 15

Where would you find smooth muscle?

Answer 15

Many visceral organs, the iris, blood vessels, respitatory tissues, and attached to hair follicles.

Question 16

Many visceral organs, the iris, blood vessels, respitatory tissues, and attached to hair follicles. These are all the locations of ______

Answer 16

Smooth muscle.

Question 17

What are the functions of smooth muscle?

Answer 17

Controlling pupil size, blood flow, air flow, and creating goosebumps if we are to cold or frightened.

Question 18

Controlling pupil size, blood flow, air flow, and creating goosebumps if we are to cold or frightened. These are all functions of ______.

Answer 18

Smooth Muscle

Question 19

Describe cardiac muscle

Answer 19

Cardiac muscle cells are striated and seperated from one another by intercalated discs that contain gap junctions and desosomes.

Question 20

______ muscle cells are striated and seperated from one another by intercalated discs that contain gap junctions and desosomes.

Answer 20

Cardiac

Question 21

What are gap junctions?

Answer 21

Avenues for electrical impulses.

Question 22

Avenues for electrical impulses. These are known as _____

Answer 22

Gap junctions.

Question 23

What are desosomes?

Answer 23

Mechanical connections that keep the cardiac muscle from pulling apart.

Question 24

Mechanical connections that keep the cardiac muscle from pulling apart. These are known as _____

Answer 24

Desosomes.

Question 25

Where can glycogen be found?

Answer 25

Glycogen can be found surrounding the nucleus of the cell.

Question 26

Where do nervous tissues occur?

Answer 26

In the brain, spinal cord, and peripheal nerves.

Question 27

What are the two types of nervous tissue cells?

Answer 27

Neurons and neuroglia.

Question 28

What do neurons do?

Answer 28

They generate signals called action potentials (nerve impulses) along the nueron to another nueron or to a muscle or gland.

Question 29

What do neuroglia do?

Answer 29

Cannot generate/recieve nerve impulses.

But have important supportive and protective functions for neurons.

Question 30

Coordinates, regulates, and integrates body functions

Answer 30

Nervous tissue

Question 31

Contains intercalated discs.

Answer 31

Cardiac muscle

Question 32

Muscle that lacks striations

Answer 32

Smooth muscle

Question 33

Striated and involuntary

Answer 33

Cardiac muscle

Question 34

Striated and voluntary

Answer 34

Skeletal muscle

Question 35

Contains nuerons and neuroglia

Answer 35

Nervous tissue

Question 36

Muscle attached to bones

Answer 36

Skeletal muscle

Question 37

Muscle that composes heart

Answer 37

Cardiac muscle

Question 38

Moves food through the digestive tract

Answer 38

Smooth muscle

Question 39

Conducts impulses along cellular processes

Answer 39

Nervous tissue

Question 40

Muscle under concious control

Answer 40

Skeletal muscle

Question 41

Muscle of blood vessels and iris

Answer 41

Smooth muscle