Cells, Tissues and Chromosomes

Question 1

Organs are composed of _______

Answer 1

Tissues

Question 2

What are tissues?

Answer 2

A group of similar cells joined together for a specific function

Question 3

What are the 4 major types of tissue?

Answer 3

Epithelia
Muscle
Connective
Nervous

Question 4

Functional cells are called__________

Answer 4

Parenchymal cells (Parenchyma)

Question 5

Supporting cells called_________

Answer 5

Stromal cells (Stroma)

Question 6

Epithelial cells are _________ joined together and cover ___________

Answer 6

Closely joined

Surfaces

Question 7

Connective tissue is made of _____ and _______________. It can be _____ or ______

Answer 7

Cells and extracellular matrix

Loose or Dense

Question 8

What are some examples of connective tissue?

Answer 8

Fibrous CT
Elastic CT - membranes
Reticular CT - mesh that forms a framework (in bone marrow)
Adipose
Cartilage
Bone

Question 9

Muscle is composed of parallel bundles of ______ and ______

Answer 9

Actin and Myosin

Question 10

What are the characteristics of smooth muscle?

Answer 10

Involuntary Control

Fusiform shape

Question 11

What are the characteristics of skeletal muscle?

Answer 11

Voluntary Control

Striated

Question 12

What are the characteristics of cardiac muscle?

Answer 12

Involuntary Control
Striated
Has intercalated discs

Question 13

What are the 3 types of Neuroglia in the Nervous System?

Answer 13

Astrocytes - role in provision of nutrients and repair of nervous tissue
Oligodendrocytes - support and insulate the axons in the CNS (via myelin)
Microglia - resident macrophages

Question 14

What is Trisomy 21?

Answer 14

Down Syndrome
There are 3 chromosome 21’s
Causes mental retardation, hearing loss, leukaemia and deformity of facial features

Question 15

What is Klinefelter’s Syndrome?

Answer 15

47XXY (2 X's and a Y)
Phenotypically male (Has a penis)
Breast developement
Testicular atrophy
Osteoporosis