cells & tissue 🧬
A cell is placed in a solution with a higher solute concentration than the cell. What happens to the cell?
The cell loses water and shrinks.
A fracture occurs through the shaft of the femur. What region of the bone is fractured?
Diaphysis
Calcium is released inside a skeletal muscle fiber. What does calcium bind to?
Troponin
A patient can see objects but cannot properly interpret visual information. Which brain region would you suspect?
Occipital lobe.
Blood returning from the body enters which chamber first?
Right atrial
A patient has damage to the mitochondria. Which cellular function would be most directly affected?
ATP/energy production.
Which cells are responsible for building new bone?
Osteoblasts
Which protein is the thick filament in skeletal muscle?
Myosin
Damage to the hypothalamus could interfere with which functions?
Temperature regulation, hunger, thirst, and other homeostatic functions.
Why is the left ventricular wall thicker than the right ventricular wall?
The left ventricle must generate enough pressure to pump blood throughout the entire body.
A cell actively moves sodium from an area of low concentration to high concentration. What process is occurring?
Active transport.
Which type of bone tissue is dense and provides strength and support?
Compact
The end of a muscle that's attached to the more mobile bone is called
The insertion
What are the brain and spinal cord together called?
( CNS ) central nervous system
What protein in red blood cells carries oxygen?
Hemoglobin
What's is the difference between the Golgi apparatus and the ER
The Endoplasmic Reticulum (ER) builds and folds proteins and lipids, while the Golgi Apparatus modifies, sorts, and packages those molecules for shipment.
What is the main function of bone marrow
Produce blood cells
What connective tissue surrounds a bundle of muscle fibers called a fascicle?
Perimysium
What carries messages away from the cell body of a neuron?
Axons
What is the main job of platelets
Prevent blood clots
A patient’s body temperature rises, causing sweating that lowers the temperature back toward normal. What type of homeostatic mechanism is this?
Negative feedback
Which type of joint allows the greatest range of movement?
Synovial
What is the small gap where neurotransmitters travel between the neuron and muscle fiber?
Synaptic cleft
Which part of the brain controls balance and coordination?
Cerebellum
The innermost layer of blood vessels is composed of what type of material
Simple squamous epithelial