Lab 3,4

Question 1

Types of CT proper

Answer 1

Areolar
Mucous
Fibrous
Reticular
Adipose

Question 2

Areolar
Fibrous

Answer 2

Beneath epidermis, loose network of collagen fibers
Protect and support , tendons, white and yellow

Question 3

Reticular
Adipose
Mucous

Answer 3

Type 3 collagen, spleen and lymph
Peripheral nerves and subcutaneous tissue
Embryo esp umbilical cord, white fibers+ fibroblast in gelatinous matrix

Question 4

Skeletal CT composed of….and…

Answer 4

Cartilage and bone

Question 5

Hyaline Cartilage

Answer 5

Glass like most of fetal skeleton, coastal cartilage, support for respiratory system.

Question 6

Hyaline layers

Answer 6

Surrounded by fibrous CT (perichondrium)
Outer layer with fibroblasts
Inner chondrogenic layer with chondrocytes in lacunae 2,4,8

Question 7

The bone components

Answer 7

Haversian canal
Volkman canal
Canaliculi
Bone lamella
Osteocytes

Question 8

Haversian canals

Answer 8

Cylindrical units, loose CT, rich in blood vessels to nourish osteocytes

Question 9

Volkman canal

Answer 9

Oblique canals connecting haversian canals

Question 10

Bone lamella

Answer 10

Compose the matrix, among rings of lacuna

Question 11

Osteocytes

Answer 11

Each osteocyte in lacuna in rings around haversian canal

Question 12

Canaliculi

Answer 12

Connecting lacuna of osteocytes together

Question 13

Some lamella and lacuna are not arranged around haversian canal they are called…

Answer 13

Non haversian systems

Question 14

Muscles types

Answer 14

Unstriated/ smooth
Striated
Cardiac

Question 15

Smooth

Answer 15

Spindle shaped, thickened central part housing the nucleus.
Myofibrils extending in the sarcoplasm of each fiber.

Question 16

Where is smooth found

Answer 16

Urinary bladder
Muscularis external of intestine
(Inner circular layer, outer longitudinal layer)

Question 17

No nucleus in outer smooth muscle layer when it is…

Answer 17

Cut near the tapering end

Question 18

Striated muscle

Answer 18

Large elongated, cylindrical cells
With dark and light bands

Question 19

Striated muscle components

Answer 19

Membrane= sarcolemma
Syncytium= large no. Of peripherally situated nuclei
Cytoplasm= sarcoplasm

Question 20

Where are striated found

Answer 20

Connected to skeleton

Question 21

During contraction…is needed for…

Answer 21

Ca2+, actin and myosin binding

Question 22

A triad is..

Answer 22

Specialised signal transduction organelle.
2 L- system, sarcoplasmic reticulum forming network of cisternae around myofibrils, major calcium storage.
T system,(in between) tubular projections of plasma membrane.

Question 23

Triad function is

Answer 23

Translate action potential from plasma membrane to sarcoplasmic reticulum, affecting calcium flow and initiating muscle contraction.

Question 24

Cardiac muscle

Answer 24

Also forms a syncytium through bridges(intercalated discs )
Surrounded by sarcolemma
Contract rythmatically