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BMS 550 Histology Exam One

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Questions and Answers

What is the topic of Section 01?

Epithelial Tissues

Connective Tissue

Muscle Tissue

Cytology 1 (correct)

How many sections are there in total?

10 (correct)

What topic is covered in Section 07?

Bone Tissue (correct)

Nervous Tissue

Epithelial Tissues

Muscle Tissue

What is the topic of Section 05?

Connective Tissue Signup and view all the answers

What is the topic of Section 09?

Nervous Tissue Signup and view all the answers

What is the topic of Section 02?

Cytology 2 Signup and view all the answers

What type of cells have no nucleus?

Prokaryotic cells Signup and view all the answers

What topic is covered in Section 06?

Cartilage Tissue Signup and view all the answers

What is a characteristic of eukaryotic cells?

Presence of a nucleus Signup and view all the answers

What is the topic of Section 08?

Muscle Tissue Signup and view all the answers

What is the function of the nucleus?

Coordinating all cell activities Signup and view all the answers

What topic is covered in Section 03?

Cytology 3 Signup and view all the answers

What is the function of nuclear pores?

Regulate movement between nucleoplasm and cytoplasm Signup and view all the answers

What is the composition of the nuclear envelope?

Inner and outer membranes Signup and view all the answers

What is the function of chromatin?

Storing genetic material Signup and view all the answers

What is the term for the fluid inside the nucleus?

Nucleoplasm Signup and view all the answers

What is the term for the space between the inner and outer nuclear membranes?

Perinuclear space Signup and view all the answers

How many autosomes are found in human somatic cells?

22 Signup and view all the answers

What is the ploidy of human gametes?

Haploid Signup and view all the answers

Study Notes

Cytology 1

There are two main types of cells: prokaryotic cells and eukaryotic cells (human cells).
Prokaryotic cells are unicellular, have no nucleus, and no organelles.
Eukaryotic cells are multicellular, form tissues, have a nucleus, and have organelles.
Eukaryotic cells undergo differentiation, which involves the interaction between genes and microenvironment, leading to two main outcomes: different appearance and structure, and functional specialization.

Nucleus

The nucleus is the command center of the cell.
It stores the genetic material, coordinates all cell activities (growth, metabolism, protein synthesis, cell division), and has molecular machinery.
The nucleus has four components: nuclear envelope, nuclear pores, nucleoplasm, and chromatin.
The nuclear envelope has two membranes (inner and outer) and a perinuclear space.
Nuclear pores regulate the movement of ions and small molecules between the nucleoplasm and cytoplasm.
Nucleoplasm, also known as karyoplasm, is a viscous fluid.
Chromatin is made up of DNA, with 46 chromosomes in human cells (22 pairs of autosomes in somatic cells, and 22 autosomes in gametes).