Cell Biology Lab Exam
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Questions and Answers

What is the function of Rough Endoplasmic Reticulum?

Protein synthesis for exocytosis, vacuoles, and lysosomes

What are the structural components of the Plasma Membrane?

Proteins, cholesterol, phospholipids, glycocalyx

Where are Mitochondria mainly found?

Hepatocytes and cardiomyocytes

Match the following glands with their respective landmarks:

<p>Adrenal Gland - Zona Fasciculata = Smooth ER Herrings Bodies = Landmark for posterior pituitary Cysts derived from Rathke’s pouch = Sebaceous Gland Corpora Aracena = Pineal gland</p> Signup and view all the answers

What are the structural proteins of Hemidesmosomes?

<p>Integrin, keratin, laminin</p> Signup and view all the answers

Where is Dense Regular Connective Tissue commonly found?

<p>Tendons and ligaments</p> Signup and view all the answers

What are the characteristics of Cardiac Muscle?

<p>Involuntary, Bi-nucleated, intercalated disks</p> Signup and view all the answers

What cells secrete hormones in the Thyroid gland?

<p>Follicular and parafollicular cells</p> Signup and view all the answers

What hormones are secreted from the inner pigmented cells of Adrenal Gland?

<p>Epinephrine, norepinephrine</p> Signup and view all the answers

What type of collagen is found in Dense Regular Connective Tissue?

<p>Type I collagen</p> Signup and view all the answers

The Gastroesophageal Junction is also known as Rectoanal Junction.

<p>False</p> Signup and view all the answers

What is the main function of the Parathyroid gland?

<p>Secretes ATH</p> Signup and view all the answers

The cells responsible for bone formation and resorption are _______________ and osteoclasts.

<p>Osteoblasts</p> Signup and view all the answers

What is a characteristic of Skeletal Muscle?

<p>Voluntary</p> Signup and view all the answers

The Thyroid gland secretes hormones that regulate bone growth.

<p>False</p> Signup and view all the answers

Match the following structures with their respective characteristics:

<p>Cardiac Muscle = Involuntary, Bi-nucleated, intercalated disks Skeletal Muscle = Voluntary, striated, multinucleated Elastic cartilage = Found in tendons and ligaments</p> Signup and view all the answers

What are the two types of cells found in the Thyroid gland?

<p>Follicular and parafollicular cells</p> Signup and view all the answers

The Adrenal Gland secretes hormones such as _______________ and norepinephrine.

<p>Epinephrine</p> Signup and view all the answers

The Rectoanal Junction is a type of muscle.

<p>False</p> Signup and view all the answers

Study Notes

Cell Organelles

  • Rough Endoplasmic Reticulum (RER) synthesizes proteins for exocytosis, vacuoles, and lysosomes.
  • Golgi Apparatus is involved in protein synthesis, concentration, and storage.
  • Microvilli are involved in cytoskeleton protein synthesis, specifically Actin.

Cell Membrane

  • Plasma Membrane is composed of proteins, cholesterol, phospholipids, and glycocalyx.
  • Function: selective permeability.

Epithelial Tissue

  • Pseudostratified columnar epithelium is found in the adrenal gland, zona fasciculata.
  • Apical structure: Cilia.
  • Structural protein: microtubules.

Organelles in Specific Cells

  • Mitochondria are found mostly in hepatocytes and cardiomyocytes.
  • Lysosomes are abundant in WBCs due to their phagocytic ability.

Cell Adhesion

  • Desmosomes are involved in cell adhesion, with structural proteins clathrin and intermediate filaments.
  • Locations: Spinosum cells (keratinocytes).
  • Hemidesmosomes are involved in cell adhesion, with structural proteins integrin, keratin, and laminin.

Glands

  • Identify the landmarks for the following glands:
    • Thyroid gland: Colloid
    • Posterior pituitary: Herrings Bodies
    • Intermediate pituitary: Cysts derived from Rathke's pouch
    • Pineal gland: Corpora Aracena
  • Exocrine glands and their secretion types:
    • Sebaceous Gland: Holocrine secretion
    • Mammary Gland: Apocrine and merocrine secretion

Connective Tissue

  • Hyaline Cartilage is a type of cartilage.
  • Lamellar bone is a type of bone.
  • Dense regular CT is found in tendons and ligaments, composed of type I collagen.
  • Locations where the transition of epithelium takes place:
    • Rectoanal Junction
    • Gastroesophageal Junction (GEJ)

Muscle Tissue

  • Cardiac Muscle: Involuntary, bi-nucleated, intercalated disks.
  • Skeletal Muscle: Voluntary, striated, multinucleated.
  • Bone: Cells: Osteoblasts, osteoclasts.

Endocrine System

  • Thyroid: Cells that secrete hormones: Follicular and parafollicular cells.
  • Parathyroid: Secretes ATH.
  • Adrenal Gland: Hormones secreted from inner pigmented cells: Epinephrine, norepinephrine.

Cell Biology

  • Rough Endoplasmic Reticulum (RER) functions in protein synthesis for exocytosis, vacuoles, and lysosomes.
  • Golgi Apparatus synthesizes, concentrates, and stores proteins for microvilli.
  • Plasma Membrane is composed of proteins, cholesterol, phospholipids, and glycocalyx, and provides selective permeability.
  • Mitochondria are primarily found in hepatocytes and cardiomyocytes.

Epithelial Tissue

  • Pseudostratified columnar epithelium has apical structures like cilia, and microtubules as structural proteins.
  • Adrenal Gland (Zona Fasciculata) has smooth ER as the most abundant organelle.

Cell Adhesion

  • Desmosomes have structural proteins like clathrin and intermediate filaments, and are found in spinosum cells (keratinocytes).
  • Hemidesmosomes have structural proteins like integrin, keratin, and laminin.

Glands

  • Sebaceous Gland secretes through holocrine secretion.
  • Mammary Gland secretes through apocrine and merocrine secretion.
  • Thyroid gland is identified by Colloid and has follicular and parafollicular cells that secrete hormones.
  • Adrenal Gland secretes hormones like epinephrine and norepinephrine from inner pigmented cells.
  • Parathyroid gland secretes ATH.

Connective Tissue

  • Hyaline Cartilage is simple columnar epithelium with goblet cells.
  • Dense Regular CT has type I collagen and is found in tendons and ligaments.
  • Lamellar bone is a type of bone tissue.
  • Elastic cartilage is a type of cartilage.

Muscles

  • Cardiac Muscle is involuntary, binucleated, and has intercalated disks.
  • Skeletal Muscle is voluntary, striated, and multinucleated.

Landmarks

  • Herrings Bodies are landmarks for the posterior pituitary.
  • Corpora Aracena is a landmark for the pineal gland.
  • Rathke's pouch is a landmark for the intermediate pituitary.

Epithelial Transitions

  • Epithelial transitions occur at the Rectoanal Junction and Gastroesophageal Junction (GEJ).

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HSF I Lab Mock Exam 1 PDF

Description

Identify the functions and structures of cell organelles, including Rough Endoplasmic Reticulum, Golgi Apparatus, and Microvilli, in this lab exam.

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