304 - Human Physiology for Pharmacy Flashcards
Label the organelles.
- cell membrane (phospholipid bilayer)
- cytoplasm
- nucleus
- chromatin
- nucleolus
- ribosomes (on rough ER)
- endoplasmic reticulum
- mitochondria
- vesicle/lysosome
- golgi apparatus
- centrioles
What is a tissue?
A tissue is a group of cells with a specialised function.
What is the scientific name of an egg cell?
An ovum/oocyte
What does the phospholipid bilayer look like?
- two layers of phospholipids
- contains proteins, some extend all the way through the membrane
What is the structure of the nucleus?
- circular
- pores
- contains DNA
Which is the ony cell in the human body without a nucleus?
A red blood cell (an erythrocyte) lacks a nucleus).
Which is the largest organelle?
The nucleus is the largest organelle.
What is the structure of the mitochondria?
- sausage-shaped
- has inner membrane
- cristae = projections
What is the structure of the ribosomes?
- small, spherical structures
What is the structure of the endoplasmic reticulum?
- series of interconnecting membranous canals
What is the structure of the golgi apparatus?
- stacks of closely folded flattened membranous cells
What is the structure of lysosomes?
- small, round organelles
- ‘binmen’ of the cell
What is the structure of the cytoplasm?
- fluid containing many protein enzymes
- helps the cell maintain its shape
What are the types of tissue?
- epithelial
- connective
- muscle
- nervous
What are the three types of muscle tissue?
- cardiac
- smooth
- skeletal
Is skeletal muscle under conscious or unconscious control?
The contraction of skeletal muscle is under conscious control.
Is smooth muscle under conscious or or unconscious control?
Smooth muscle is under unconscious control.
What is the function of smooth muscle?
- regulation of blood vessels (diameter)
- propels contents of the ureters
- expels contents of the bladder and uterus
- GI tract
Is cardiac muscle under conscious or unconscious control?
Cardiac muscle is under unconscious control.
What is the function of the cardiac muscle?
- alternate contraction and relaxation
- stimulated by nerve impulse
What is the function of skeletal muscle?
- support/posture
- protection
- movement
Label this diagram of an axon.
What is the function of nervous tissue?
Responding to stimuli and transmitting impulses from one body organ to another.
What is nervous tissue made up of?
- neurons
- glial cells
What are the three types of neurones?
- motor neuron
- interneuon
- sensory neuron
What are sensory neurons also referred to as?
Afferent neurons = sensory neuron
Where do sensory neurons transmit signals?
Sensory neurons transmit signals from the sensory organs to the CNS.
Where do motor neurons conduct signals?
Motor neurons conduct impulses from the CNS to the target organs.
Where are interneurons located?
Interneurons are located between the primary sensory neurone and the motor neurone.
Label the bones
Label the bones
Label the bones
Label the bones
Label the bones
Label the bones
Label the bones
Label the bones
Label the bones
Where would you find cardiac muscle?
Cardiac muscle is found in the heart.
Where would you find skeletal muscle?
Skeletal muscle is found in the muscles alongside bones. (eg biceps)
Where would you find smooth muscle?
Smooth muscle is present in the walls of hollow organs.
What is the function of cartilage?
- Cartilage is a resilient and smooth elastic tissue that covers and protects the ends of long bones at the joints
- Structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs.
- Holds things open (eg rings of the trachea)
- shock absorption
What is the function of the tendons?
- tough bands of connective tissue (made mostly of collagen) that attach a muscle to a bone.
Which are the fat soluble vitamins?
- vitamin A
- vitamin D
- vitamin E
- vitamin K
Which are the water soluble vitamins?
- vitamin B
- vitamin C
Where are the main hormones for regulating blood glucose produced?
The main hormones for regulating blood glucose levels are found in the islets of Langerhans in the pancreas.
Which hormone do the alpha cells in the islets of Langerhans secrete?
The alpha cells in the islets of Langerhans secrete glucagon.
Which hormone do the beta cells in the islets of Langerhans secrete?
The beta cells in the islets of Langerhans secrete insulin.
What is the function of the mouth?
- breaks food down mechanically (chewing)
- breaks food down chemically (enzymes eg amylase in saliva)
so it can be easily digested.
What is the function of the oesophagus?
- transports chewed food from the mouth to the stomach via peristalsis
Label the digestive system
What is the function of the pancreas?
- secretes digestive enzymes into the duodenum to digest macronutrients
- makes hormones to regulate blood glucose (glucagon and insulin)
What are the sections of the small intestine?
- duodenum
- jejunum
- ileum
What is the function of the large intestine?
- muscular tube that moves digestive byproduct/stool (waste) along by peristalsis
- absorbs water back into the body
What are the sections of the large intestine?
- cecum (blind gut)
- ascending colon (right)
- transverse colon (across)
- descending colon (left)
- sigmoid colon (connects to the rectum)